Otome wa Boku ni Koishiteru: Trinkle Stars The Animation

Mizuno, a student at an elite all-girls academy, lives a double life, masquerading as a male student to honor a promise to her father. Within the gilded halls where strict decorum meets refined tradition, she becomes the object of affection for her classmates, each projecting onto her their ideal of an "older brother." Her days are a delicate dance of etiquette lessons, tea ceremonies, and the tender, confusing emotions that bloom beneath the disguise. As the facade threatens to crumble and hearts flutter with unspoken yearnings, Mizuno must navigate the intricate web of duty, identity, and the fragile connections formed in a world of beautiful pretenses.