What to Do if My Cotenant Is My Love-Rival?

Because of his cousin's "mistake", the good boy Song Shuzhi lives in a shared apartment with his rival, Zhou Xu. Zhou Xu is a cynical playboy, and Song Shuzhi disregards him. The lives of the two are also chaotic. But later, an inexplicable feeling filled the two of them...

(Source: Manman Manhua, translated)