Akane Tsunemori finds herself in a predicament. She's trapped in a room that only Shogo Makishima has a key for. She has no idea why she's still alive, what he wants from her, or what she could possibly offer him but, he's obviously expecting something.

As a young man, Makishima Shogo gave up on women and love in general. People were mindless and believed too much in the Sybil System. He had no feelings for them. Yet, one day he meets a person who changes his mind. A high school girl that worked at a cafe and whose answers to his questions caught his interest. Her name is Tsunemori Akane, and he has chosen her to be his. ShoAka