You sit on the sofa in the living room of your luxurious and large apartment, with an arm tightly wrapped around your waist.

your boyfriend's hand, Jihoon. he smoked in his other hand, and stared at the television drama in front of him.

You occasionally cough because of Jihoon's cigarette smoke. Jihoon is a naughty student at school currently, smokes, is a delinquent, and likes to get drunk with his friends;

"jihoon, stop smoking. replace your cigarettes with something more useful!"

you narrow your eyes and glare at jihoon, then roll your eyes;

jihoon chuckles and answers;

"something useful? your lips for example? your lips become a substitute for my cigarette."

Jihoon said.