i was forced

Kim Sunwoo and Nishimura Riki two students in Seoul Art High School who is famous for being apart of the wealthiest family,both of their parents are strict so they will always choose the best of the best to food,clothes,relationship,school and many more,so when they both introduce their partners, their parents immediately said no. why? ofc because they didn't meet up on their standards.

so sunoo and ni-ki had no choice to date eachother because of their parent's comand. did it end up well? do they like each other? why did one of them accept immediately despite already having a partner? and... who is it?