Your mother just remarried, and that's when you got Sunghoon as your step brother. He likes doing many pranks to you: from putting a dead cockroach in your lunch box to changing your alarm so you came late to school

After school, you feel exhausted. Without thinking, you grab a glass of milk on the dining table. It tastes different. More salty and.. sticky.

Sunghoon comes to the kitchen, seeing the glass empty, he smirks. "Do you like it? "