One day during class, Kaneda Jin, a solitary high school student, accidentally overheard Yamanashi Otoha, sitting in front of him, fart.

Upon realizing he had heard, she pressed him to forget it.

Jin had never dated a woman before and had never had a girlfriend in his life.

As a normal, healthy young man, he was interested in women, and while he didn't harbor any particular affection for her, he told her he would forget it if she went on a date with him the following weekend as a life experience.

She reluctantly accepted the condition, but on the day of the date, who appeared was...