Shishunki to Danshikou!? to Nakano-kun

Hajime Nakano finds his teenage years thrown into despair when his mother forces him to enroll in a newly established all-boys high school. Lamenting the prospect of spending the next three crucial years entirely surrounded by male peers, Hajime braces himself for a dull and monotonous school life devoid of any romantic prospects or female companionship. However, Hajime remains entirely oblivious to the absurd reality of his new environment. Unbeknownst to him, every single one of his fellow students is actually a girl in disguise, secretly pretending to be a boy. To complicate matters further, each undercover female student operates under the mistaken belief that she is the only girl in the entire school. This sets the stage for a hilarious and chaotic comedy of errors as Hajime navigates an academic landscape fraught with hidden identities and constant misunderstandings.