Dear Brother (1991)

Nanako steps onto the pristine grounds of Seiran Academy on her first day, a prestigious all-girls school where the legendary Sorority holds ultimate sway. With only ten coveted spots up for grabs this year, the pressure is immense. Though she seems like an ordinary student, Nanako is shockingly chosen—and immediately becomes the target of bitter, envious classmates. Yet, through the relentless harassment, she discovers unexpected allies, forging deep bonds with the school’s three most admired girls. In the midst of the chaos, she also finds herself falling in love, turning her world upside down.