Euphoria

""Per angusta ad augusta, per aspera ad paradisum" (through dificulties to honor, through hardship to paradise)"

A 2011 H-game, with an Hentai anime adapting it with several liberties released on the same year.

Takato Keisuke wakes up in a white room in the middle of nowhere, wearing his school clothes. He remembers going to bed yesterday, but seems to have been kidnapped during his sleep. Investigating what happened to him, he soon exits the room and discovers that along with him, six females he knows were seemingly also kidnapped: his childhood friend Hokari Kanae, the class president Andou Miyako, his under classmate Makiba Rika, his English teacher Aoi Natsuki, same year Byakuya Rinne, and classmate Manaka Nemu, that weirdly seems amused by the situation unlike everyone else.

Soon a robotic voice talks to them through a loudspeaker, and explain they will have to play a game. A game that will put, at best, one of the girls through hell. Keisuke, however....

Developed by ClockUp. Anime produced by Majin.

The eroge/anime provides examples of:

 * Action Girl: The Woman In Black in the VN and Natsuki in the anime..
 * All Just a Dream:
 * Ass Shove: Oh boy, here we go..
 * Belligerent Sexual Tension:In all routes, but specially Nemu's route Takato and Nemu is a dark, very dark example of that trope, though it's one-sided, with Takato refusing to willingly enter in a relationship with Nemu and acting aggresively towards her while she constantly teases him, but it's clear Takato is fighting very hard to not go into her arms. In her route, he goes as rough he can to make her break and fear him, and in.
 * Birthmark of Destiny:.
 * The Comically Serious: In a unexpected way, Byakuya becomes this, specially when the "bonus games" are played. Out of simple innocence or because she seems to also lack the capacity to understand emotions, she doesn't understand very well what could make Takato excited aside of his very obvious sadism. Keisuke comments on how that makes him like her even more, because she does things he likes without even being aware of how perverted it looks.
 * Deadly Euphemism: Nemu refers to death as "The End" when the others characters begin to discuss about executing a Loophole Abuse that would allow them to get the food from the VIP room to the outside, and she is convinced that doing something like that would get all of them killed like Miyako.
 * Double Consciousness: Takato struggles between his identity as common student and as a sexual sadist in almost each route, trying desperately to try to hide the latter despite the games making him feel better and better each time.
 * Double Standard Rape (Female on Male): Averted. No jokes are made on Takato being abused and raped both in the VN and in the anime.
 * Dramatic Unmask: The Woman in Black is finally unmasked.
 * Dressed All in Rubber: The Woman In Black wears a form-fitting latex suit. Combined with her gas mask and unexpected agility and stealth for someone of her size, it gives her an otherworldly feeling of mystery and terror, since she seems less like an human and more like a machine.
 * Earn Your Happy Ending: What the quote on the top is about, and.
 * Eat That: Oh boy, here we go. Certainly one of the softest pornographic scenes of game, and not all that gross, but specially repulsive to Rika..
 * Eerie Pale-Skinned Brunette: Byakuya Rinne, that along with her behaviour makes her look like an alien, like someone who understands human behaviour but lacks certain traits of it.
 * Face of an Angel, Mind of a Demon: Keisuke often comments of Nemu's beauty, that contrasts extremely with her cruelty.
 * Foreshadowing: Nemu suggests Takato to pick the same girl over and over again after the first sex chamber. At first it seems like a lazy in-game hint in how access each girl's route..
 * Gas Mask Mooks: Or in this case mook, The Woman In Black. It easily marks her as.
 * H-Game POV Character: Takato is Type II B, but surprisingly verging on Type VI thanks to his sadistic urges. In one bad ending, he goes full Type VI and, oh boy, it isn't pretty. Well, unless you're extremely sadistic too and got off on it.
 * Hidden Depths: Nemu seems to be a very...perverted girl, much more willing in participating in the game that even the adult Natsuki. If you pick her, however, to Takato's surprise, she is a virgin. And that is just one layer of inconsistency between her usual behaviour and what she actually is...
 * Hoist by His Own Petard: Rika in two routes..
 * Hot Teacher: Natsuki Aoi has a pretty face, nice figure, and quite well endowed.
 * Instant Humiliation - Just Add YouTube: Or more exactly, NicoNico(since it's Japan). In Rika's route, one of the games involves simple vaginal sex, except that it's being broadcast through the Internet and Rika has to say very embarrassing things to the camera. The game never goes into detail about the implications of this, but the humiliation part is here, just as the nasty comments you would expect from anonymous people in the Internet, floating through the screen.
 * Irony: The Woman In Black wears a gas mask, that is extremely confusing, since the last thing you would expect in this setting would be someone using gas as a weapon. That isn't irony.. Situational Irony at it's finest.
 * Late Arrival Spoiler: If you played the game after watching episode 2 of the anime, you will be surprised to discover
 * Lighter and Softer: The bonus games involve sexual acts that are well less rough that the main chambers, to the point it you could say they are even trying to be romantic.
 * Light Feminine and Dark Feminine: Nemu and Kanae, specially when taking in account how Takato see them. Nemu is a reflection of his dark personality and sadism, and wants him to drown in his own desires. Kanae represents innocence and naive happiness, and is that how Takato wishes everything to end, even with Nemu keeping to push his buttons.
 * Love Potion: An extremely dark version of the Love At First Sight variation: it makes you incredibly horny towards the nearest person you see and not even orgasm stops it, but you're basically an euphoric animal in heat until the effect ends, with your mental capabilities greatly reduced, and you think about sex 100% of the time, if the effect ends. It also gives you extreme pleasure during sex.
 * Madness Mantra: In Rinne's route,.
 * Marry Them All: There is one route that can end this way(yes, despite the fact there's only unique routes if you choose a girl over and over again). It's an alternate end to this route, and even the term "them all" may be stretching:.
 * Never Found the Body: Andou Miyako's is never stated as dead in the game. Her dying body just disappears from the electric chair room after the events of the first sex room, no matter who you choose. Is something even her VA brings up in the extras.
 * No Ending:
 * If you choose more than one girl to enter the sex rooms to have sex with Takato, in the end.
 * Some bad endings end like this, like the ones with Rika. Takato just falls unconscious in the middle of the action and the credits roll, without resolution to the situation.
 * Nemu's route itself..
 * Not So Stoic: What Takato wants to cause to Rinne through extremely sadistic sex, both in her route and her first focus episode in the OVA..
 * Rape by Proxy: What the whole thing is and the majority of the girls believe to be, since they have to have sex or die, but Takato seriously doubts it because he likes it. Apparently he never heard that sexual excitement and orgasms don't equals consent, which gets specially ironic when one of the "games" involves constantly stimulating a girl with a magic wand until she have 10 orgasms, and Takato and the players can see clearly how prolonged stimulation of sexual pleasure can be used as torture as the girl goes mad with pleasure.
 * Sanity Slippage: Keisuke seems to be always verging on insanity, but it is specially clear on.
 * Sex Slave: The idea is brought up by Nemu when Takato opens a box in the first room that contains a bondage vest for her to wear, but otherwise seems absent..
 * Split Personality: Takato defies this trope, even after a particular episode where suddenly gruesome thoughts about Kanae appear in his head to the point he is affected physically, saying that there's no separation between the sadistic part of himself and "Kanae's childhood friend".
 * Spoiled Brat: Rika isn't a kid, but is treated such as one by everyone, using her cuteness as a way of getting everything she wants. Byakuya and Takato even drop the name of the trope in Rinne's route, and Byakuya proceeds to try to correct her behaviour.
 * Strange Girl: In her route, as Takato interacts more and more with her, Rinne is shown to be...strange once someone begins to get close to her. She hear voices, believes that the punishment Takato gives to her is a way of absolving her own sins, and in general seems to know more about what's happening than you could think initially.
 * Teacher-Student Romance: What happens if you choose Natsuki as Takato's partner.
 * The Chosen One: Sort of. In Rinne's route and Episode 6,.
 * The End - or Is It?: The end of Episode 6 of the anime, at the time of this writing the last episode.. What all of this even means? May we never know, as the visual novel has a totally different end for the sequence of events happening in that episode.
 * The Stoic: Byakuya Rinne don't shows a lot of emotions. Even during her sex scenes, it's clear her screams and moans is just her instinctively showing pain. Soon as the sex ends, she turns stoic again.
 * The Three Faces of Eve:
 * Nemu, Byakuya and Rika form such an trio at first. Rika is the innocent one, Byakuya is the mature and smart one, and Nemu is the sexy and seducing one. This even plays in how they take the torture: Rika is extremely reluctant and desperately don't want to be chosen, Nemu is completely willing and in fact welcomes it, while Rinne just...don't care.
 * Alternatively, considering their personalities, there's Kanae, Rinne and Nemu. Kanae is the kindest, Nemu the evillest and Byakuya the neutral.
 * Token Evil Teammate: Takato verges between Anti-Hero and Villain Protagonist, but Nemu is clearly enjoying the game and not even hiding it a little, and in each route, including her own, she stimulates Takato to give in to his sadistic urges.
 * Token Mini-Moe: Rika seems like a straight case at first but it is quickly deconstructed. She is petty, greedy, childishly annoying despite being only one year younger than the other teenagers and The Load, as unlike the other girls Keisuke has to drag her to the sex rooms and she absolutely never helps herself or the others in anything, using her cuteness as crutch. You may think that the developers were actively stimulating you to rape her to see her suffer.
 * Troubled but Cute: Takato is the shining champion of this trope. He's a sexual sadist to the extreme, but clearly has deep guilt issues about it and it is shown to be really a kind person when he's not feeling sexual pleasure of torturing girls.
 * Undying Loyalty:.
 * Ungrateful Bastard: For all the help that the others characters give her, Rika, apparently solely because Nemu treated her well in the deluxe room.
 * Vader Breath: The Woman In Black is a subversion: her role is similar to Vader, and the sound of her expiration does seem laboured, but it seems more a result of the gas mask she wears than anything.
 * Villain Protagonist: Zig-Zagged. Takato is a sadistic teenager that truly enjoys seeing girls in pain and rape them. However, he states he never did something like that before and the circumstances of the game force him to act like that, so he is technically a victim as much as the girls, as Natsuki brings up. Forcing him to torture girls through sadistic sex acts seems like pushing a bottle of alcohol down the throat of an alcoholic. However, in a possible bad ending, he.
 * What Happened to the Mouse?: Something you don't would notice unless you play other routes before Rinne's one..
 * X Meets Y: The premise sounds like someone threw Saw and Marquis de Sade in a blender with very fast and sharp blades. Grab your vomit bag if you're too weak.....Or enjoy it if you're strong enough.