Mitsuki and Yuya become stepsister and stepbrother because of their parents’ marriage. Mitsuki can’t get along with her new family and Yuya doesn’t know how to approach his new stepsister….

The “Torture Club” is an official after-school activity at the private school Saint Honesty Gakuen. Yuzuki has no idea about the club when she enrolls, and gets abducted by the…