nishimura riki or known as niki is park jina’s enemy. he’d always make fun of her height since shes shorter than him. both are 18

jina was at a store when a middle aged lady dropped some things, she went and helped the lady. the lady thanked her and took her to the lady’s home.the lady called her son, her son turned out to be niki

“meet my son, nishimura riki”

the lady said with a warm smile. niki had a mean look. he looked surprised to see his own enemy at his house