There's a bully living in my house

Yeo-ju and Tae-hyung are siblings and the school's most outcasts. Their reputations are rife: Yeo-ju is known for being quiet, while Tae-hyung is known for his constant troublemaking. Their school survival strategies are polar opposites, and a transfer student approaches Yeo-ju with affection. Meanwhile, Tae-hyung's eventful story of surviving bullying begins now.