Senpai! Waza to ja Nai n desu!  

Senpai! I didn't do it on purpose!, センパイ！ わざとじゃないんです！

Sachi, a young woman in high school, admitted her feelings for Jun, who is a year older than she is. As a result of their relationship, Sachi has been experiencing some amusing mishaps. For instance, when she attempted to hold hands with Jun for the first time, she mistakenly placed her hand in his pants, only to inadvertently grasp onto something else entirely. Despite this, their romance is filled with innocent playfulness and ecchi moments.