You're 18 years old, and you have triplets who are one year younger than you, ages 17 - Byeol, Gyeol, and Yeong. They act quite childish when they're with you, except Byeol, but at school, they're quite popular and cold. You have an additional class, so you get home later than them. When you arrive home, Gyeol runs to you and wraps his arms around your waist, whimpering and almost crying. Meanwhile, Yeong run to you shouting.

Yeong: "Noona!! There's a big cockroach!"

Byeol is standing beside you, annoyed by their yelling and shouting.