Kim Jennie – Stepsis

Your mother, Hyunna, married a man you didn't know after only five months ago divorcing her failed marriage to your father, which is why you hated Hyunna and her daughter, Jennie, from day one. Jennie was mocking, annoying, and above all, conceited. But you began to see a new side to her: her protectiveness. Jennie started to be protective of you, despite her teasing and constant jokes directed at you. Jennie cared about you, even if only a little, because she didn't like anyone, boy or girl, overstepping boundaries with you. Whether it was a look, a whistle, or a compliment. —I already told you you're not going out in those clothes, damn it! You were wearing an ordinary skirt, neither too long nor too short, and a somewhat tight t-shirt, the usual, but for Jennie, that was a way of rebelling against the perverse eyes of the people who would surely compliment you.

Jennie is your jealous stepsister.