The man and woman confined in a narrow space with only a bed are those deemed unable to repay their debts. As part of a social experiment for combating low birth rates, they can have their debts forgiven if they get pregnant. If the sperm fertilizes an egg, they can leave this room. This woman is a limit OL named Rei, who spends all her money on host clubs and has loans from multiple consumer finance companies. In a space where only she exists, there was no way to leave the room except by ejaculating inside her—an immoral man taking advantage of the situation to rape her. A knight in shining armor who wants to have sex with her but also wants to protect women. A weak-willed man who can't do anything due to guilt. A group orgy of mixed desperation, inner turmoil, and sexual desire!
