After school, schoolgirl Ai is taken to a certain place by her best friend Shuri. A middle-aged man in her room. Shuri sits on her man's knee and she kisses him without hesitation. Shuri invites Ai, "Let's kiss Ai-chan together," while showing Ai who is surprised by her sudden behavior of her best friend. Ai refuses, saying, "I can't do it," but she gets lustful while being shown the two's rich kisses, and she feels her crotch getting wet. A middle-aged man also joins in, and Ai feels that being blamed by the two of them is a special act.
