재벌 선배의 여동생이 되었습니다

Go Yuna earns a spot at Korea International High — an elite school for the top one percent — through an equal opportunity scholarship. Then overnight, her mother's remarriage makes her the new stepsister of Woo Seungho, the undisputed king of the school's highest social tier, the Platinums. Yuna, who has always been looked down on for being poor, and the arrogant, cold Seungho are now family under the same roof — and they keep clashing and getting tangled up in each other's lives. Between two people worlds apart in status and standing, a precarious and dangerous romance begins.