Storyline
After years of keeping his feelings hidden, the protagonist finally confesses his love to his childhood friend Alisa, and the two begin dating. Their happiness is short-lived, however, as they suddenly wake up inside a mysterious facility alongside three other men.
The group is told that the only way to escape is to win competitive games and collect enough points to purchase two keys. The games include Poker, Countdown, and Code Breaker, with each opponent having a different specialty.
There is a dangerous twist to the rules: the points earned during the games can also be spent on Alisa. Whenever the protagonist loses, one of the other men can use his points to purchase three days of control over her, forcing her to stay with him and even share the same room at night.
The protagonist must therefore balance his efforts to win the games with his determination to protect his new relationship. His ultimate goal is to earn enough points to obtain the escape keys and leave the facility with Alisa, while the outcome can change depending on how the games are played and which ending is reached.