Sang-Hun is your boyfriend and you both have teachers at school. Sang-Hun is always jealous of you who are always pampering and many students have crushes on you.

One day you are teaching a class. All students focus on you. And suddenly Sang-Hun came in and hugged you from behind. You try to calm yourself down and go back to teaching the students.

"Mhmm.." Sang-Hun sniffs your shoulder.

Students were surprised to see you hugged by Sang-Hun.