School Days is an Animated Adaptation of the visual novel of the same name. Just like in the original Visual Novel the story centers around Makoto Itou who spends his days watching a beautiful girl named Kotonoha Katsura from a distance, until one day he gets the opportunity to meet her with the help of her newfound friend Sekai Saionji. Eventually Makoto finds himself involved in a Love Triangle with his two friends that will put their emotional threshold to the ultimate test.

While the original game was a story that aimed to subvert the Harem genre with its many twists and dark themes, this anime series presents a story that starts out with a happy innocent mood, but gradually becomes much darker, and by the end plummets deep into the pits of despair, angst, and violence.

There are also two OVA episodes, Valentine Days and Magical Heart Kokoro-chan, that exist in Alternate Continuities. Especially in the latter's case, which turns most of the main females into Sentai and/or Magical Girls with liberal amounts of randomness and School Days-style Fanservice and gore.

Finally, there's also a manga adaptation, which is much more family-friendly than the anime. Makoto, much less of a Jerkass here, manages to resist Sekai for most of the run; when he finally gives in to temptation, he feels so bad about it that he is prepared to break up with her... until stuff happens. Almost more disturbing than the anime, in a subtle way. There's a manga adaptation for Cross Days as well, which follows Yuuki, the protagonist of the game, and which gets dubious props for somehow making Makoto even more of a jerk than he is in the anime.

Discotek Media licensed the anime and released it on DVD in 2015 and on Blu-ray in 2017.

School Days contains examples of:

• Aerith and Bob: The series is known for its unusual names and alternate spellings. Compare Kotonoha, Sekai, Kokoro, Roka and Itaru to Makoto, Setsuna, Yuuki, Hikari, Nanami, Taisuke and the rest.
• Adaptation Distillation:
  • The anime reduces Makoto’s internal struggles and good-hearted nature to a mere self-serving front in order to turn him into a complete Jerkass. This is also true for pretty much all of the supporting cast, who had all their positive traits completely removed in order to present them as Jerkasses as well. The only ones who were saved from this are Sekai and Kotonoha, and then just barely.
  • By contrast, the manga portrays Makoto more sympathetically and makes him an unambiguously well-meaning person who genuinely cares for both Kotonoha and Sekai.
• Adaptational Context Change: Many endings of the VN are actually referenced inside the anime while not being the real ending:
  • Everyone's Makoto has Hikari sleeping with Makoto behind Sekai, and making sure he gets to sleep with every other girl too. In the anime Hikari does sleep with Makoto behind Sekai but unlike the VN, here she doesn't develop a bond with him, and it's implied she really doesn't want anything to do with him outside of sex. She also doesn't set up Makoto with any other girls. As a side note, this ending provides the name for Episode 11 as well.
  • Goodbye Sekai ends with Sekai leaving Japan and Makoto getting into a cycle of having sex with every other girl without feeling anything other than the emptiness that Sekai left behind. In the anime Sekai doesn't leave, yet Makoto does sleep with every other girl. However, there's no emptiness or depression behind his actions. Just pure and complete lust.
  • Setsuna's Feelings has Setsuna trick Sekai into admitting her feelings for Makoto by calling her and faking having sex with Makoto on the phone. This so Setsuna could get them together before leaving to Paris. In the anime Setsuna doesn't trick Sekai but instead she does have real sex with Makoto before leaving, on the condition that he stays with Sekai after she's gone.
  • A reference to four Kotonoha endings^note To Kotonoha, After the Kiss, It Begins with the First Kiss, and All Hers is made in the last episode before the Big Finale. Kotonoha and Makoto share lunch and talk about their feelings, deciding to leave the past behind and become a true couple. In the VN this scene comes after Makoto saves Kotonoha from her bullies, makes Otome and the other girls promise they would stop bullying Kotonoha, confronts Sekai about manipulating the girls to bully Kotonoha, and severs all ties with her for good. So it's pretty clear why these endings are pretty definitive in the VN. In the anime...well... yeah...
  • Despite To My Child being one of the two main inspirations for the anime ending, there are some differences in the context of how it happened in the original VN. The first one being that Sekai was legitimately pregnant and already with a noticeable belly when she killed Makoto. There's also the fact that in the VN Makoto does feel regret at what he did to Sekai, and is very happy to see she's okay. Then accepts death with dignity, looking at the sunset, with his final thoughts being that despite everything, he did love both Kotonoha and Sekai.
  • Other endings are given small Shout-Out moments. Christmas Eve is referenced in one scene where Kotonoha says that she made reservations for a very expensive hotel to spend Christmas with Makoto while in her breakdown. In a reference to With Honesty, Makoto leaves his actual date with Sekai to go rescue Kotonoha who was waiting for him alone on Christmas Eve, while in the VN the role of the girls is inverted. In Earnest Feelings Requited Otome and Makoto have sex to formalize their relationship, while in the anime they have sex for fun and Otome ends up severing ties with Makoto after realizing what an awful person he's become.
• Adjective Noun Fred: The ~Magical Heart Kokoro-chan~ OVA.
• Alas, Poor Yorick: The ending features a smiling Kotonoha floating away in a boat with Makoto's head, portrayed in the creepiest possible way.
• Ambiguous Situation: The ending. Was Sekai really pregnant? Was she lying about it to try and keep Makoto for herself? Or was she experiencing a psychological or other kind of false pregnancy? After murdering her, Kotonoha cuts her stomach open and declares that she must have been lying when she doesn't see a fetus, but by this point Kotonoha is an Unreliable Narrator, and Sekai wouldn't have been very far along if she was pregnant; if there was a fetus, it could have been too small for Kotonoha to see.
• Animation Bump: The anime has rather limited, middle-of-the-road animation. However, Makoto's death is rather well-animated considering the rest of the show. All the more to satisfy the audience, obviously.
• The Anime of the Game: The original PC Visual Novel was released in Japan on April 28, 2005. The Anime ran in Japan from July 3 - September 27, 2007. See Animated Adaptation in the description above.
• Ascended Meme:
  • "Nice Boat" started as one 4chan commentator's dry remark following an outpouring of shock due to Episode 12 being replaced with 30 minutes of Norwegian scenery and classical music following the news of a girl murdering her father with an axe. The meme became so widespread, 0verflow named their Comiket 73 booth as such.
  • Also see the Shout-Out at the end of ~Magical Heart Kokoro-chan~'.
  • Kadokawa run a 45-second video of a Nice Boat, the day that the first episode of Haruhi-chan was supposed to be uploaded. The video had a message saying that they couldn't finish it on time. The episode was uploaded the next day.
• Bait-and-Switch Credits: At the beginning of the anime, the OP seems fitting. Later on, it becomes so nauseatingly happy in contrast to the story that by the last episode, the show doesn't use the OP anymore, but just the "School Days"-Logo crashing like a destroyed sheet of glass. Somewhat justified as the first episode started the same way.
• Beware the Nice Ones: Kotonoha. Like in the games, she’s a really shy but sweet girl. However, by the end of the series she proves to be an amazing killer, both disarming Sekai with one single movement and killing her with one quick cut to the neck. She also proves to be amazing at cutting the human body by both sawing Makoto’s head off of his body cleanly and later cutting Sekai’s womb open to see if there was a child growing inside. One skilled girl indeed.
• Black Blood: The broadcast version of the last episode. The DVD version leaves all the blood in its red glory.
• Bookends: Episode 1 begins with an internal monologue by Makoto detailing his feelings for Kotonoha; the same speech is played over the post-credits scenes in Episode 12.
• Breast Expansion: In Episode 5, there’s a callback to the inflatable bikini scene from the Visual Novel. But it’s Setsuna who helps Sekai instead of Nanami.
• Central Theme: How much people are ready for sexual relationships at a young age?
• Character Exaggeration: All three main characters and most of the supporting cast undergo this, with their negative traits being dialed up to the point where they pretty much dominate their personalities (by contrast with the original visual novel, which on the whole gave them more Hidden Depths and realistic motivations). Again, fully intentional.
• Credits Jukebox: ANN lists 8 ending themes in a twelve-episode series. Some of them come from the original visual novel.
• Closed Circle: A depressive example. No one outside the main cast cares about them AT ALL.
• Culture Justifies Anything: Popular in Japan BDSM fetishes and traditions between women and men presented here explain a LOT. This doesn't mean that it doesn't create a huge number of problems because of Ignorant of Their Own Ignorance and manipulations. And often, guys and girls can't tell who is consenting to whom in bed.
• Deconstructed Character Archetype: It begins as a typical Harem Anime, with the average-looking protagonist, suddenly gaining the attention of many cute girls at his high school. However, unlike other shows that play it for laughs, this show gives the viewer a realistic example of what can happen when a boy suddenly starts getting with different girls and the psychological damage that it can cause, from the protagonist seeing the girls as nothing but sex objects, to the girls that really care about the protagonist getting mentally damaged by his behavior — so much so that one could be driven to commit murder.
• Deconstruction: By the end, you will have an idea of how a Harem anime would go in real life if a guy really did treat a group of young women that all had feelings for him like your typical H-Game player treats the female characters of a game — and if some of those women happened to be extremely unstable. Most real people wouldn't react like that. Some would. Also, it makes it clear that someone pursuing solely his or her own pleasure with everyone in sight while paying no attention to the effects that are having on others is an immature, maladjusted jerkass.
• Demoted to Extra:
  • Nanami is much more important to the plot in many paths in the Visual Novel. In the anime, she barely makes an appearance in a few episodes.
  • In the manga, pretty much everyone but the main trio.
• Downer Ending:
  • Although judging by most of the anime's entries, it probably fit into non-sexual Fanservice to most tropers who saw it. After the nice boat, that is.
  • The manga, though fewer people die, is still quite the downer. Although Makoto survives his injuries trying to protect Sekai from Kotonoha, he later learns that during his hospitalization Sekai has killed Kotonoha to be with him...
• Establishing Character Moment: In the first episode of the anime, Makoto exposits on a supposed love charm activated by keeping your crush's picture as your cell phone wallpaper. We hear him think, "What bullshit," in an unpleasant tone right before he tries to delete his picture of Kotonoha.
• Even Evil Has Standards:
  • Sure, all the girls in the 10th grade are spreading like peanut butter for Makoto and each don't mind in the least that they're not the only one… but they all drew the line at Makoto loudly and publicly abandoning his unborn child, and collectively dropped him like a sack of shit.
  • Makoto himself has standards by standing up for Setsuna when she was being bullied; that's why Setsuna fell in love with him. So at least being a bully hunter is a consistent standard of Makoto's.
• Fan Disservice: The last episode is rife with this. First we have Sekai finally snapping and stabbing Makoto to death with a kitchen knife while sitting on his chest and with her panties being visible almost the entire time. And then there's Sekai's murder at the hands of Kotonoha, who is splattered with Sekai's blood and wearing quite a short skirt as she takes up her saw and slices open Sekai's stomach to check for a fetus.
• Fanservice: Lots among the girls. Panty shots, in particular, are quite abundant. The implied sex Makoto has with pretty much every last one of them.
• Fanservice with a Smile: Sekai in her waitress uniform, complete with detached sleeves. The Meido uniforms from the School Festival also count for this trope... which often turns into Fan Disservice, on account of it being present in even the most horrifying scenes.
• Genre Shift: Starts as a light-hearted and slightly ecchi comedy, finishes as a big melodrama. And in the final episode, it turns into slasher horror...
• Girl Posse: Otome's friends Minami, Kumi, and Natsumi are a really nasty and cruel version. By the end of the series, their Alpha Bitch, Otome, ends up as being less bitchy than them.
• Good Girls Avoid Abortion: After Sekai tells Makoto she's pregnant, he pressures her to get an abortion simply because all the other girls he’s been sleeping with refuse to have anything to do with him since he abandoned the girl he got pregnant. In other words, the concept of an abortion is used to drive home what a total Jerkass he is. However the trope is subverted when you realize that Sekai was avoiding going to the hospital, not because she rejected an abortion but because she wasn’t pregnant at all.
• Gorn: In addition to all of the High-Pressure Blood, the last episode had Kotonoha slice and pry Sekai's stomach open, blood everywhere, with an "inside looking out" camera shot which, aside from some fleshy strands still attached, wasn't too too bad in the TV broadcast, but then the Nausea Fuel gets cranked up even more as the DVD edition did away with the Black Blood, so you can make out all the textures and stuff. Seriously nasty.
• Heel Realization: A downplayed one in the finale. When Kotonoha catches Setsuna kissing Makoto during the school festival, she assumes that it's part of Sekai's efforts to break her and Makoto up. During the final episode, however, she brings this up to Sekai, who reacts with genuine confusion. Kotonoha immediately realizes that Setsuna never told Sekai what she had done, and from there deduces that Setsuna's feelings for Makoto were genuine.
• Here We Go Again!: The after credits scene of the last episode features a monologue from Makoto which is identical to the one he gave in the beginning of the first episode. Considering how the anime is adapted from a multi-choice visual novel, this may be reflective of a new version of the story about to start. Hopefully, one that doesn't end in madness, heartbreak and death.
• If I Can't Have You…: In the last episode, Sekai brutally kills Makoto after he chooses Kotonoha over her.
• Jerkass: Taisuke, as he takes advantage of Kotonoha and is (at least vocally) more perverted than Makoto.
• Karma Houdini:
  • Otome's "friends" get away with bullying Kotonoha, sexing up Makoto behind Otome and Sekai's backs and, in the anime, exhibiting a tape that shows Nanami and her boyfriend having sex, ruining her reputation at school.
  • Makoto's best friend Taisuke also gets away with raping Kotonoha at the school festival.
  • The same trope could be applied to Kotonoha in the last episode of the anime, unless you consider her descent into utter madness to be karma.
  • And in the manga, Sekai gets away with murdering Kotonoha.
• Killing in Self-Defense: Subverted. Sekai brings the knife she used to murder Makoto to the climatic meeting on the roof with Kotonoha, and immediately goes for it when Kotonoha attacks; unfortunately for her, Kotonoha is quicker on the draw.
• Love Triangle: That is, if you discount half a dozen other girls - Makoto certainly does!. However, the manga is more of a deconstruction of the trope since it only focuses on Kotonoha and Sekai.
• Loving a Shadow: Heavily in play for several of the characters that have feelings for Makoto. Most of them begin showing interest in him after seeing him at his best moments (Otome knew him in middle school when he was a nicer person, Setsuna met him when he defended her from a bully) and their feelings are based on that, which causes them to ignore glaring red flags about Makoto's behavior and who he actually is as a person. Otome in particular struggles to reconcile the version of Makoto she knew in middle school, who was genuinely kind and friendly, with the Makoto of the current day, and eventually comes to the conclusion that she can't.
• Male Gaze: The ratio of face shots to boob/butt shots in this show is close to 1:1.
• Merging the Branches: In the Visual Novel there are many scenes and story beats that would never intersect in the same story branch. The anime does its best to include as many iconic story scenes form the visual novel as possible into one single story. Also the ending only takes into account the events of 2 of the 22 endings in the original VN (although the final episode does have a scene where Kotonoha and Makoto share lunch in the rooftop where they formalize their relationship, which could be a reference to four Kotonoha endings in the VN that end in a similar way).
• Mood Whiplash: The final scene before the credits is Kotonoha floating out to sea with Makoto's severed head, having very clearly gone off the deep end before going to the happy ending tune. After the credits roll, we hear a repeat of Makoto's internal monologue about his admiration of Kotonoha from the first episode, playing over a montage of all the other students happily going about their days as if two of their classmates hadn't just brutally died.
• Murder the Hypotenuse:
  • Kotonoha kills Sekai in the finale. Too bad it was little too late.
  • Reversed in the manga when Kotonoha tries and fails to kill Sekai; Sekai is the one who later kills her, even gloating about it in front of a hospitalized Makoto.
• No Accounting for Taste: Of the four anime love interests (Kotonoha, Sekai, Otome, & Setsuna), it is only explained why Setsuna likes Makoto, and ironically she is the only girl to love him for reasons other than liking him, curiosity, or lust. Also Hikari – What does she sees in Taisuke anyway?
• No Main Villain: The story overall doesn't have a primary antagonist, with all of the drama being caused by the characters being terrible to one another, such as Makoto being a womanizer who puts his libido over the feelings of the girls he manipulates, Sekai convincing Makoto to have an affair behind Kotonoha's back, Otome's friends showing a video of Nanami and her boyfriend having sex in front of the entire school, Sekai murdering Makoto out of possessive spite, and Kotonoha murdering Sekai to eliminate the competition.
• No Periods, Period: Averted, sorta. One of the reasons why Sekai thinks she's pregnant, aside from suddenly having vomiting fits, is that her period hasn't come on time.
• Not His Sled: One particular constant among every single story branch in the original game is that, no matter how you play, Otome will never get to sleep with Makoto in the break room during the festival. However in the anime, Otome does manage to sleep with him during the festival. This is also the point where the anime completely diverges from the original game, as many of the developments occurring from this point forward can't be found on any story branches of the game (or happened under completely different circumstances).
• Only Sane Woman: Otome is the only female of the whole cast who realizes just how bad Makoto has turned, confronted him about it, and left him out of disgust. All other girls took their distance only because of his bad reputation after Sekai announced she was pregnant or, in the case of Sekai, Kotonoha, and Setsuna, never stopped chasing him despite recognizing Makoto was just using them.
• Parody Episode: The OVA ~Magical Heart Kokoro-Chan~ is a spoof of the Magical Girl genre and the Sentai genre, as well as of the original series.
• Phrase Catcher: "Idiot." "You're the worst." Everyone uses this to describe Makoto.
• Play Within a Play: At the school festival, Setsuna attends one that parallels her kissing Makoto while he slept despite knowing Sekai's feelings for him. The same imagery is later used in Episode 12, when Sekai is confronted in her mind by a vision of Setsuna.
• Plucky Comic Relief: Taisuke. See Bromantic Foil and Dogged Nice Guy above.
• Practice Kiss: Just like in the visual novel, Sekai tricks Makoto into this to get him to fall in love with her.
• Poor Communication Kills: In this case, literally. Even beyond that, so much of the plot could have been avoided if Makoto had just straight-up told literally anyone other than Sekai that he was in a relationship with Kotonoha.
  • Most of Setsuna's actions are driven by her upcoming move to Paris and her desire to ensure that Sekai has a replacement Living Emotional Crutch. She misguidedly decides not to tell Sekai about the move until after it happens, and Sekai is thus left an emotional wreck when she leaves out of nowhere.
• Properly Paranoid: When Sekai goes to meet "Makoto" (actually Kotonoha using his phone) on the roof in the finale, she brings the knife she used to kill Makoto with her. Unfortunately, Kotonoha gets to her own weapon first.
• Psychotic Love Triangle: Trope Codifier
• Rape as Drama: Subverted. Kotonoha's mental and emotional breakdown begins hitting more fully after she had an aggressive sex with her idiot Stalker with a Crush, Makoto's best friend Taisuke who didn't understand her problems and her relationship status with Makoto.
• Relax-o-Vision: After a particularly nasty Real Life incident in Japan where an Ax-Crazy schoolgirl murdered her dad, the final episode had to be Distanced from Current Events and replaced by an episode of random peaceful Norwegian scenery, which included a rather nice boat. See Ascended Meme.
• Reality Is Unrealistic: Many who dislike the show have cited the unlikable characters and the confusing plot as reasons for why they've hated it. Some who enjoy the show have actually cited these things as reasons for why they like it, as the main character's refusal to remain faithful to his girlfriend coupled with his Really Gets Around nature is something that many men, especially in this day and age, unfortunately do to their partners.
• Sadist Show: Take one Jerkass protagonist, one passive-aggressive Clingy Jealous Shrinking Violet, and one kind but thoughtless Matchmaker with a Crush, and put them in a decent-sized Japanese high school. Apply drama and stir thoroughly until emotions bubble to the surface. Boil off all cross-communication and common sense, then let the mix settle for twelve episodes. Serving size: One anime.
• Sex Is Evil, and I Am Horny: Because of the culture of shame with a banned/absent The Internet Is for Porn and lack of "training" materials.
• School Festival: Throughout the first half of the anime, the students are preparing for this in the background. It takes place over Episodes 8 and 9, and includes several inciting incidents that set the stage for the finale, including: Setsuna kissing Makoto while he's asleep and getting caught by Kotonoha, Makoto and Otome having sex in the break room and unknowingly being filmed by the girls in the basketball club, and Kotonoha being raped by Taisuke.
• Shout-Out:
  • ~Magical Heart Kokoro-chan~ has several, as expected of a Parody Episode. The girls form a Sentai team, Kokoro and Kotonoha are secretly magical girls, and there's a giant robot fighting at the end. The opening theme sequence also blatantly references the visuals in the Ultraseven opening.
  • The unmistakable shout-out at the end of the OVA episode, regarding a certain famous meme associated with this series, where Kokoro is rowing in an inflatable raft specifically labelled "Nice Boat" on its sides.
• Snow Means Love: Makoto apologizes to Kotonoha and says he loves her in a snowfall at the end of Episode 11, a redeeming moment in the anime. Comes complete with Kotonoha covered in snow.
• Soundtrack Dissonance:
  • The opening and ending themes for the Anime eventually become a big contrast to the Genre Shift / Mood Whiplash. In the last episode, the opening and its respective theme aren't even shown. It would've been too dissonant at that point. Instead, they have a picture of a shot from the opening on screen for a few seconds before it abruptly shatters like glass.
  • The same tune for the bad endings in the Visual Novel is used for the anime’s ending. I guess that tells you enough about it.
• Stalker with a Crush: Setsuna Kiyoura. She tried to be more discreet than the others… until Kotonoha caught her kissing Makoto in his sleep.
• Start of Darkness: Sekai's "training" offer to Makoto.
• Surrogate Soliloquy: In this case, just Talking To The Head. While there is no exposition on Kotonoha's part, there is no mistaking to the viewer that she has perhaps irrevocably gone off the deep end, mental health-wise, on her Nice Boat.
• Tangled Family Tree: Not evident within the game itself, and only visible to those who explore the related games by 0verflow. Expect any character's full biography to list almost every other character as a relative, usually with a long list of ways they're related.
• There Are No Therapists: In one of the few lucid moments for Makoto, he eventually notices Kotonoha’s horrible descent into madness. But only when he happens upon Kotonoha while wandering around alone and becomes horrified by the sight of her standing in front of him rambling about how she wants to be a good girlfriend to him.
• Third-Option Adaptation: The ending to the anime is a composite of elements from two other endings in the original game: To My Child and Bloody End.
• A Tragedy of Impulsiveness: Makoto would probably have ended up happier and kept himself and Sekai from getting murdered if he had only kept it in his pants.
• Wham Line
  • Sekai sending a message saying "Sorry... ... ... ...goodbye.".
  • In the Manga
  Kokoro: "Onee-chan's covered in blood!"
• What Does She See in Him?: They do technically answer this but at the end of it all, it doesn't justify nearly enough of what happens. To clarify, what they see in him is two things: One, he's a nice enough guy to be a bully hunter and to make others feel confident and special. Two, he's amazing in bed.
• What the Hell, Hero?: In Episode 12, Sekai has a vision where Setsuna calls her out for her actions around Makoto, pointing out that she was the catalyst for the love triangle and its tragic consequences.
• Wingding Eyes: In the ~Magical Heart Kokoro-chan~ OVA, Makoto and Taisuke sport big shiny gold starbursts in their eyes in their ecstatic response to the arrival of the Anonymous Defence Service. Later a naked Taisuke's eyes contain big white starbursts for Magical Heart, whom he sees in person for the first time.