歳下の先輩ちゃん2
I Don't Want To Lose To My Younger Senpai-chan
Toshishita no Senpai-chan ni wa, Maketakunai.· 年下の先輩ちゃんには、負けたくない。
manga
The story of an ordinary college student's interactions with his senpai at work, who happens to be in high school.
