kokoro ayase's boyfriend, kamejiro, knows she has been invited to a drinking party with her high school alumni. worried about her drinking too much, he tries to contact her several times during the party but fails to reach her. the next day, kokoro returns home late in the morning, but says nothing when confronted. later, kamejiro sees her bring a man from the party back to their home and witnesses the entire affair, becoming depressed and aroused.
