Nanami teaches a self-defense class, and a male student named Tomizawa enters. Tomizawa has some background in martial arts, so he seems to look down on self-defense techniques and appears to be trying to take advantage of the situation to overpower Nanami and show off his strength. One day, while giving Tomizawa a private lesson, Nanami is suddenly groped and reflexively throws him away. The defeated Tomizawa doesn't apologize but instead smirks and approaches Nanami again…
