When he returns to his parents' house, his niece is there, just like the old days, inviting him to take a bath together. However, her body is already attractive enough to make him erect... Also, even though she's over 20 and can drink alcohol, she accidentally exposes herself in a defenseless outfit... Normally, it's a situation where you would want to just go with your instincts. But this is an uncle-niece relationship, and there are other relatives in the living room... What would you do?