Dokuzetsu Shoujo no Tame ni Kitaku-bu Yamemashita

Sakaki Sui is a second-year high school student who proudly considers himself a professional member of the Going-Home Club. For him, having complete freedom over his after-school hours is sacred—a pure club activity that requires no application forms and no formal withdrawal process. However, during the autumn of his second year, his cherished routine is abruptly shattered when a beautiful teacher assigns him an unexpected mission: cure the venomous tongue of Hiwa Arina. Arina is a stunning young woman whose flawless appearance masks a devastatingly sharp wit. Nicknamed the "Venomous-Tongued Rose," she has mercilessly crushed the confessions and advances of countless boys with her biting words. Tasked with reforming her, Sui finds himself trapped in a paradox. As a devoted member of the world's greatest club, lingering at school after classes end contradicts everything he stands for, yet refusing his gorgeous teacher’s request is simply out of the question. Now forced to spend his precious free time on campus, Sui—who can only seem to communicate through jokes—must navigate a chaotic daily life alongside a girl who wields insults like weapons. Their absurd school days quickly devolve into a whirlwind of verbal abuse and relentless banter. Yet, beneath her hostile exterior, Arina harbors a hidden secret that Sui has not yet begun to uncover.