Discipline: The Record of a Crusade

Discipline: The Record of a Crusade is an H-game produced by the people behind Bible Black, and was later adapted into a 6-part Hentai OVA called Discipline: The Hentai Academy.

Takurou Hayami just transferred to a new school. Though most of the members of his fellow dormitory seems like kind of jerks, with the exception of Saori Ootakawa, which keeps them in check as leader, it seems his new days at Saint Arcadia will not be that bad. That is, until he unwittingly attracts the attention of Leona Morimoto, the ultra-wealthy, ultra-beautiful, and ultra-evil fellow high school student which sees her using his seat in his first day at school when she arrives late. She slaps him but Ootakawa manages to defuse the situation by reminding her it was the only seat available.

Sadly, for Takurou, Leona took an interest on him, and that interest will not cease until he becomes her new toy.

A prequel OVA that follows the anime was later produced called Discipline Zero.

Developed by Active and published by Active and Kururi Active on Japan.

Tropes used in Discipline: The Record of a Crusade include:

Abusively Sexy Woman: Almost every single female in the cast at one point or another.
Affectionate Parody: Ogiwara, a parody of Great Teacher Onizuka's titular character.
Big Bad: Leona's aggressive attempt to add the protagonist to her clique is what progresses the plot along.
Blondes Are Evil: Leona is noticeably blonde and noticeably a bastard.
Born Unlucky: In his first day at the school, the protagonist is caught peeping and is raped by the tennis team. And then when he returns, he enters the bathroom while Kaneda is still there, naked. And then Ruri and Yuki rape him while he is sleeping. This has nothing to do with Leona, so it boils down to it.
Butt Monkey: In the game, the one faculty member who rebels against Leona Morimoto's power over the school has all sorts of bad stuff happen to him every time he tries to do anything about it.He eventually dies when he snaps and tries to kill her with a shotgun to the chest at point blank, but she had bullet proof fibers sewn into her school outfit, so she pulls out her own gun and kills him.
The Cameo: In the anime, many of the characters from the game not adapted in the first three episodes briefly cameo in the second three episodes.
Chick Magnet: Takurou basically has an endless horde of vampiric teenage females waiting to devour him. Sudou even remarks the tennis team did not rape the last fool who peeped on them but beat them up, so he is pretty lucky.
Creepy Crossdresser: Isobe confesses wore the clothing items who he stole from Otokawa years ago when meeting her first time on-screen.
Dark Is Not Evil: Despite being placed underground and the ominous name of some of its rooms, the bible study group is composed of nice people.
Deal with the Devil: Kaoru goes through transsexual treatment because it's either that or be abandoned by Leona in her own words.
Disproportionate Retribution:
- The Tennis Club rapes Takurou for peeping on them.
- Otokawa and Yuuki torture Takerou physically simply for having a lewd photographic montage of Otokawa on his pocket.
Leona's Ferrari is rigged to explode if somebody vandalize it too much.
Dominatrix: Many of the women have the attitude, and Leona Morimoto even wears the outfit at one point.
Dude Looks Like a Lady: Kaoru looks a lot like a girl, voice and certain unmistakably male anatomic features aside. Takurou even gets confused and attracted to him at one point.
Face of an Angel, Mind of a Demon: Leona is extremely beautiful and extremely abusive towards any of her sexual partners.
Fearless Fool: Isobe seems to be one, until he builds distance from Leona after meeting her. He keeps trying to intimidate Leona by radio and when she appears in person and make his bet with her even worse while on close range to the demonic beauty, but he gets cowardly as soon he builds distance from her.
Foil: Otokawa role seems made to contrast Leona as best as possible. She exercises leadership through respect and kindness than fear and money towards her own group, and while Leona is basically a storm of impulses and neuroses, Otokawa is controlled and has discipline that Leona only thinks of having, if she thinks at all. And while Leona only thinks of torturing people sexually, Otokawa uses physical and verbal torture only.
Futanari: Kaoru Ito, who earlier in the game is shown to be an effeminate male who is later turned into a transsexual by Leona. Also, in the anime version, we never see his transition from male to transsexual, though he does show up in the prequel while still male.
Girlish Pigtails: Ruri behaves and talks in a pretty girly way and wear pigtails.
Gone Horribly Right: The drug Leona injects Takurou with to keep him excited after too many ejaculations drive him crazy and he literally doesn't stop, raping the nearest available subject if not satisfied.
Happiness in Slavery: Takerou notices the male members of athletic clubs love to be sexually subservient to the women.
Hospital Hottie - The school nurse.
I Know Mortal Kombat: Isobe apparently thinks that works in this setting, which Leona's cartoonish antics aside is mostly realistic, thinking he can develop magical baseball skills by watching and reading baseball anime and manga stories, what puts Takurou beyond the state of shock.
Innocent Fanservice Girl: Ruri first appears while naked in front of the protagonist while seeking for her clothes.
Lack of Empathy: Leona sees one of her subordinates be raped thanks to her drugging Takurou with a drugging aphrodisiac and she only thinks of how stimulating the sight is.
Likes Older Women: The school nurse assumes that is Takurou's case as he climaxes on Kawahara, when in truth her finger did the trick thanks to Takurou being so overwhelmed any stimulus could make him do that.
Never Live It Down: In-universe, Otokawa is still angry at Isobe for stealing her panties and bathing suit from her, years after the fact.
No One Could Survive That: After the assistant dean blows himself up, Isobe and Sudo reach the conclusion there is no way he could survive it.
Princess Curls: Leona is rich and exercises control over the school like a monarch and have drills.
Paper-Thin Disguise: Leona's disguise as female doctor couldn't fool anybody familiar with her. The protagonist probably only doesn't realize because he only saw her once.
Post Script Season - Odd variation. The anime runs through a condensed, somewhat altered version of the main game plot in the first three episode, and the last three are an original scenario that uses parts of the game not adapted in the first three.
Rape by Proxy: Leona orders Takurou to rape the school doctor Kawahara. When he doesn't comply, she injects him with chemicals to the point he can't help but do that as his sexual urges become unbearable.
Reality Ensues: Leona's antics with a fighter jet eventually attracts the JSDF's attention when she decides to fire a missile in a building.
School for Scheming: In the game, to a considerable degree. In the anime, this is taken Up to Eleven
Screw the Rules, I Have Money: Leona is free to do whatever she wants, starting by skipping school and by ending by torturing her fellow classmates because her family is that rich.
Shameless Fanservice Girl:
- The expression "jumps at you" feels like it was tailor-made to apply to Yuuki, which does try to throw herself on the protagonist at every opportunity.
- Maiko doesn't really care if the protagonist sees her naked, though it's more indifference than genuine forwardness.
Smart People Wear Glasses: From the main female cast, Maiko is absolutely obsessed with studying, doing it even while eating, and the only one of the wear glasses.
Token Loli: Ruri. She is noticed to look younger than teenagers of the same age, talks in a very childish tone, and wear pigtails.
Undying Loyalty: Kaoru is completely willing to do anything Leona wants.