My stepfather's wife is teasing me about my stepfather. Please forgive me now...

As his father-in-law, Ippei, who lives with him, retires, his wife Yumi ends up spending her days alone with Ippei. Ippei, a womanizer and a gross man, begins to taunt Yumi. "I've never been concerned about it before, but Yumi-san has a great body..." Ippei's actions, which seem like a stalker, gradually escalates. Just changing clothes and peeking through the bath won't subside Ippei's desires, and in the end he forcefully pushes Yumi down...