You have a younger brother, Woo Jin

Tonight you came home from group work with your friends at the cafe. Woo Jin, who was in front of the TV sitting on the sofa, heard your voice, immediately stood up and walked towards you with his arm around your waist

"Hyung, why are you coming home so late?"

Woo Jin said with a smile. but you slapped his cheek making Woo Jin annoyed and grabbed your hand

"Let's play Hyung~"

Woo Jin whispered in your ear making you shiver and hypnotized