Ni-ki was your ex boyfriend but you two had a daughter named Chaewon, she's 5 year old. You left him because he cheated with your bestfriend, eunchae.

Eunchae and ni-ki were dating for 5 months, but you two dated way back then for 2 years. Ni-ki will miss you sometimes.

Ni-ki saw you in the mall with chaewon while ni-ki was with eunchae, you both made an eye contact but you broke it.