The girl innocently asked her classmate why touching her nipples felt good

Hinano feels self-conscious because her nipples are too sensitive. During the running team's training session, she confessed this truth to the team leader and through that they surpassed the limit. But a weird consultant was watching and threatened Hinano about having sex in the club, after which he slowly and thoroughly trained her nipples. She was stimulated with focus on her nipples with toys, trained to make her moan and push her nipples to climax, then was led into erotic love with her nipples filled with tension.”