Tokubetsu Jugyou 3 SLG

Tokubetsu Jugyou 3 SLG is a 2012 mix of Simulation Game and Visual Novel, released only on Japan.

Kengo Ishizuka is a teacher with a twenty years long career. He is also very depraved, and has raped and sexually enslaved dozens of students. He has worked in several schools of Japan, always dumping the girls he trained through torture to worship him. After all this time, he is transferred to his alma mater and also the place where he made his first victims, the Asazuka Academia.

In his first day, he meets Saki Morimiya, a smart and beautiful student which has great future on her horizon. Sadly for her, Kengo sets her as the first target of his lust. Saki is also a bastard, born of a single teenage mother which also studied on the same academy. Kengo soon discovers her mother is Rie Morimiya, a student which he had enslaved twenty years ago. And he deduces, given the timing of Saki's birth, that he is her father. Will that stop him of raping and enslaving her? The player will discover even before the second H-scene that no.

In terms of gameplay, Tokubetsu Jugyou 3 is a simulation of the twisted variety. Initially, the only mechanic available is stalking, which is exactly what it says: Kengo following the three main female characters after school period is over to discover their habits. One enough progress is made, Kengo forces them to have sex with him using information he obtained through stalking. Then the simulation part begins.

Early in the game keys to an old, empty school building are given to Keigo, with the headmaster of the school(which is completely oblivious to the fact Keigo is a rapist) giving them to him so he can keep the building guarded of any antics which students could try on it. Keigo decides then to use the building as his sex slave training facility.

The player then controls how the slave training will progress, with different activities raising or decreasing different stats. If raised high enough, the stats will unlock new activities to be done with the girls. Activities are classified based in what them involve, varying from "pleasure" activities, like masturbation, to "torture" activities, like whipping. As more and more training is done, the story also begins to progress, and the stats affect what is gonna happen. To obtain certain items, there is also a mechanic called ransacking, which allows Keigo to obtain new items to train his slaves with.

In case you don't know japanese, SLG is a pun: it can mean both "Slave Gakuen"(Slave School), and "Special Lesson Gakuen"(Special Lesson School).

It was adapted into a 2-episode OVA by Milky Animation Label and MS Pictures. The episodes were directed by Teruaki Murakami, known for the anime adaptation of Taimanin Asagi, and the episodes are animated in his usual trippy, fast-paced style.

Developed by BISHOP. Directed by Monsieur Piranha.

Tropes used in Tokubetsu Jugyou 3 SLG include:

Abuse Mistake: During her storyline, Arisa mistakes a light injury of Saki caused by wrongly placing books on a shelf with Kengo hurting her. Type A.
Archnemesis Dad: As you can expect, Saki becomes very antagonistic towards Keigo after he rapes her. To a murderous point.
Bi the Way: Arisa if she becomes a fully submitted slave at high pleasure level admits she likes both Kengo and Saki.
Bitch in Sheep's Clothing: With exception of Arisa, nobody even seems to suspect Keigo is a cruel rapist which tortures his victims on top of it. And even Arisa's distrust do not prepares her for what her male teacher actually does.
Black Comedy: The only comedy the game haves. Achievements contain dark jokes about parental bonding between Saki and Keigo, jokes which he himself does in the main story.
Blatant Lies: Saki denies throwing a vase from an upper floor on the direction of Keigo's head despite the only plausible suspect being her.
Brains and Bondage: Kengo is a high-school level teacher, and uses bondage methods when enslaving females.
Daddy's Girl: If she becomes broken with a high level of pleasure, Saki becomes one to Keigo, and even asks him to be allowed to call him "dad". Kengo deduces she always wanted to have a male parental figure and became enamorated with the idea once she became a fully submissed slave of her biological father.
Even the Girls Want Her: Arisa mentions several girls are attracted towards Saki. Including herself.
Gainaxing: Though we don't see it, Keigo describes Mikako's breasts bouncing while walking in narration.
Girlish Pigtails: Arisa acts much more girly than other members of the cast and wears pigtails.
Going Commando: Once the three main females become slaves, "public training" becomes available. One of the options of it is to remove their underwear.
Hope Spot: Keigo is almost killed by a vase thrown from a higher floor when he enters the school after some time training Saki. He easily deduces it was her, though the consequences are basically more of the same he already does to her.
Hot Mom: Rie Morimiya. It's justified, she had Saki when she was still a third-year high school student.
Hot Teacher: Mikako Majima, the literature teacher. She also becomes Keigo's slave, but he does it because she detects something wrong with Saki and knows is related to the old school building which Keigo is using to train her, forcing his hand in blackmailing her, so she can protect her marriage and Saki's privacy.
Meganekko: Comments between Keigo and Mikako concerning her appearance and personality paint her image as this in high school.
Parental Incest: Saki is raped by her own father Keigo.
Proper Tights with a Skirt: Mikako's default outfit as teacher.
Rapunzel Hair: Mikako and Saki's hair reaches their waist.
Schoolgirl Lesbians: Through stalking, the player and Keigo discovers Arisa has an homosexual crush on Saki. Saki seems completely oblivious to it.
The Last of These Is Not Like the Others: Mikako's husband Koji is the only non-slave character with a special sprite.
The Three Faces of Eve: The three slave girls. Arisa is the child, the most immature, Saki the wife, the sensible and capable and, as the only adult with an active sexual life, Mikako is the seductress.
Third-Person Person: Arisa sometimes speaks of herself in this way.
Undying Loyalty:
- Mei is still enamorated with Keigo, though she doesn't know he came back to his old school. Keigo exploits this trope to keep Saki submitted to him, fearful what he could do to her if he got his hands on her again.
- All three slaves once their level of submission hits maximum and a scene happens where Kengo threatens them with withdrawal of sexual pleasure if they do not submit.
Unwitting Pawn: The newspaper club's only member, a female student which unknowingly informs Kengo of rumours and other information spreading around, ends up helping in covering his tracks by reporting everything to him, since he is the advisor of her club.
Video Game Caring Potential: Played with. The "pleasure training" methods, which involve different kinds of caressing, make the girl more comfortable with training and less resistant, but the point is of course to induce Stockholm Syndrome so Keigo can have sex more comfortably later. Also, before the first sex scene with Saki you can choose to not take her virginity. This results in the player being able to advance comfortably through the game with a virgin Saki.
Video Game Cruelty Potential: To a non-fatal extreme. The player can whip, drown, spank and whip his victims.
Villainous Incest: Though Kengo's inner monologue, we already discover he is a pretty ugly person from the inside, the fact he doesn't even consider not making his next victim his daughter says a lot about him.
Villain Protagonist: Kengo is utterly depraved, and rapes and blackmails his way through the main female characters for no other reasons than his own satisfaction, and according to him he has done this countless times before, and flashbacks show him doing it to Saki's mother. Discovering Saki was his daughter actually gives him a new sick thrill.
Yandere: As Arisa's storyline progresses, Kengo discovers Arisa's obsession with Saki is pretty big as is crazy, even taking in account Kengo is genuinely torturing and raping Saki.
Your Cheating Heart: Mikako certainly feels like she is cheating with her husband by being trained and raped by Keigo, with her (default) dialogue often involving she asking for forgiveness from her husband.