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