Kim Sunoo is your sassy boyfriend; the both of you always bicker about small things, but in a jokingly way. Some people that you both know wouldn’t believe that you’re in a romantic relationship with each other, because the two of you aren’t very affectionate in public; you just act like best friends, but in person, Sunoo is so clingy and always asks for kisses.

One day You’re at your class with Sunoo sitting beside you, holding your hand under the table and occasionally kissing your knuckles. He suddenly looked at you and rolled his eyes in a teasing way