Tappuri no Kiss kara Hajimete

Hibari is a manga editor who can't feel anything during sex. When she was a college student, she fainted during her first sexual experience with Yanagi, a senpai in the track and field club, and since then has been unable to feel anything. Now a working adult, Hibari has been reunited with Yanagi, who is the young master at a hot springs inn she is visiting for her work...?

(Source: Shueisha, translated)