[The dark side of "sex for sex" that is rampant in the idol industry. The truth about the entertainment industry that dreams of becoming the center of tomorrow] Suzu, who has experience in ballet dancing, is a talented dancer and is one of the best members of the group. Rui is an idol trainee who is training hard for her debut. Although they work hard every day, they are not getting the results they want. When she finds out that the shortcut to debut is sex for sex, she reluctantly offers up her youthful body, even though she feels guilty. At first, she reluctantly obeys, but gradually her sweet voice starts to leak out and she accepts a penis into her vagina in order to become the center.