Mayumi, who is annoyed by her sister being an adult video actress, becomes aroused by the male actor from the film crew who suddenly shows up at her house. "I wonder if my sister is getting licked right now," Mayumi hears her sister's moans through the wall and feels guilty about her carnal desires. This controversial work borders on the foul, depicting the anguish of those who have an adult video actress in their family and the Kokoro feelings of the actress who continues to work in adult videos despite that.