ONIMAI: I'm Now Your Sister! (2023)

Mahiro Oyama, a laid-back gamer with a penchant for erotic titles, finds his life upended when his younger sister, a scientist, accidentally turns him into a girl. Initially desperate to revert to his former self, he gradually realizes that this unexpected transformation presents a unique chance for personal growth. As he navigates his new identity, Mahiro begins to explore the possibilities of a different life, prompting him to reconsider his priorities and ambitions in a quirky, heartwarming journey of self-discovery and adaptation.