Six people find themselves trapped in a mysterious futuristic complex,forced to dance to the tune of a sadistic computer game, where failure tofollow the game rules results in death.Characters include our protanist, Takato Keisuke, his childhood friendHokari Kanae, classmate Ando Miyako, underclassmate Mikaba Rika, Englishteacher Aoi Natsuki, same year Byakuya Rinne, and classmate Manaka Nemu.While still confused about their unusual situation, a mysterious voicesuddenly speaks to them: "A game has now started."In order to escape the room, Keisuke is the "unlocker" and one heroine the"keyhole". With an assigned act, he must "use the key".After hearing the unreasonable and immoral requirements to win, Miyako getspissed and snaps on the mysterious voice. Suddenly the lights go out, the girlsscream, then lights return reilluminating the room to show Miyako bound toa grotesque torture device."Anyone who quits the game will die."Her screaming begins in tandem with the electrical current. With eyes wideopen in fear, she pisses and shits herself. Everyone else starts freakingout. However, Keisuke seemed to be getting aroused by Miyako’s appearance.That was his secret, his urge to assault and humiliate girls.However, Nemu could see right through him and knew. Nemu takes advantage,forcing the protagonist to submit to her as she brings her lips up to his ear:"This is a contract kiss."Keisuke was surprised by Nemu’s behavior but he wants to protect Kanae anddecides for the sake of escaping, he will violate the others. Can Keisukeescape the white rooms and return to his normal life? Or will he hold backhis own dark urges?