バイト先の可愛い先輩に子供扱いされているので、見栄張って帰り際に先輩の前で使う予定がない0.01mmのアレ買ってみた。すると翌日からどうも先輩の様子がおかしい

Unveiling a captivating tale of young love and comedic mishaps, the web novel 'I Was Treated Like a Child by a Cute Senpai at My Part-Time Job, So I Bought a 0.01mm Con*** I Wasn’t Going to Use in Front of Her After My Shift to Show Off. Then, From the Next Day Onwards, Senpai Started Acting Strange' follows the journey of a high school boy and his charming senpai. Through a series of hilarious events, the boy's attempt to earn respect and affection leads to unexpected developments in their relationship. With themes of comedy, ecchi, romance, and slice of life, this Japanese work offers a fresh and engaging narrative for readers.