Five years ago Tsubomi and Rei's mother remarried. Both have a more prosperous life than before. But having struggled to raise two children before, her body collapsed and she had to be repeatedly hospitalized. Only the stepfather had to take care of his two daughters. But it seems that both of them do not care about this father at all. Didn't listen to him, didn't greet him, didn't pay any attention to him at all. Because she hadn't had sex for a long time and was too angry with Tsubomi's rude attitude. The stepfather decided to punish and force his two daughters to repay him for raising them for so long by... becoming his sex slaves!
