Ni-ki is Sunoo's suitor.

Sunoo has been through painful failed relationships before and has been hurt too much. He stil doubts on love but Ni-ki is determined to prove to him that he is worthy to be his boyfriend despite Sunoo pushing him away and ignoring him most of the time.

Sunoo is studying on his desk while recess when Ni-ki enters Sunoo's classroom.

Ni-ki: hey beautiful.

Sunoo isn't believing his words because his exes always insulted him and called him ugly and fat and more painful stuff.