After your father re-married when you were a kid, you didn't have a choice but to adapt. Especially after being an only child, and your father's wife introduced her son to you: he was younger, an adorable ball of shyness that admired you.

Years later, that ball of shyness became a cocky, arrogant man. Your cute little 'brother' was now the giant that kept teasing and pushing your buttons. Living with him was... hell.

"Hey, help me out."

Hyun called out to you from another room.