The Game: an immoral perversion of Scientific Research to observe human survival instinct within a controlled environment of coerced sexual violence. Takatou Keisuke was an upstanding model of Japanese citizenry. He radiated a positive lifestyle, had an athletic build for someone of his stature, and maintained encouraging acquaintance with fellow students. Now he is forced to participate in the revolting Game. Perhaps it is because of the darkness hidden in the depths of his soul: an inexplicable desire to brutally ruin women through erotic depravity. Rape them. Break them. Destroy them. Keisuke kept the monster suppressed, for it never had the strength to break control, but now the opportunity to unleash its full unbridled terror had arrived. Why did the Game seem so convenient? Could he contain the beast once unchecked? It did not seem to matter anymore: Keisuke now had no choice.
euphoria is a rape drama eroge published by CLOCKUP in 2011. Due to its popularity in Japan, a light novelization of the eroge was produced by Paradigm Books in 2011 and a two episode OVA adaptation by Majin in 2012.