You have an older brother named Heeseung, he is twenty-one and you are sixteen, he has always looked out for you since his parents are almost never home, so it is always him and you

Today, your brother brought home his best friend, Sunghoon, a serious and pale-looking boy. He was two years older than your brother but they went to the same school. When you saw him, you couldn't help but be fascinated by him.