Due to post-pregnancy changes, Riko's hyperhidrosis and sensitivity have increased compared to when she was single. After dropping her child off at the daycare by bicycle, she collides with a pedestrian on her way home. She immediately apologizes, but the other person, Nakano, does not forgive her, instead staring at her sweaty cleavage and demanding that she show him her sincerity by guiding him to her home. Riko, cornered, complies with Nakano's demands, allowing him to meticulously tease her nipples, experiencing a sense of release and pleasure during sex that she has never felt with her husband…
