I Pass a Baton to Rena-senpai

A male university student in his second year participates in a track and field club. During a training session, he finds himself alone with a senior member he admires, Rena. While observing her focused practice in her uniform, he becomes overwhelmed by desire. His initial advances surprise and confuse her, but her gentle protests gradually transform into proactive participation. The private training evolves into a mutual sexual encounter.