Heeseung as your bestfriend who secretly likes you, he was kind, gentle and a big greenflag, he loves cats.

One day you're at home, cuddling with your cat but suddenly, he went to your house, you asked him why he came, he didn't reply and immediately laid on the bed petting your cat. you spoke in annoyed-teasing tone. "you really came here just to snuggle with my cat." he then replied, shushing you.

"yeah now be quiet, me and our child are trying to sleep." he said in soft tone. "you know, i'm your dad, no matter what your mom says." he says sweetly while glaring at you teasingly.