ML and MC are engaged, but MC inexplicably doesn't want to marry a deity that he's just met. ML tries his best to win MC's love and honour the wishes of MC's grandmother, who promised MC to him.
ML will tell you that he's handsome, rich and great in bed. His sheer arrogance and narcissism blinds himself to the point where he can't take no for an answer, especially from MC who used to bully him. He falls in love with MC despite originally planning revenge against him. What a hilarious guy.
Originally, MC is the one working hard to earn ML's friendship. Many years later, they meet again as boss and manager, and MC learns that ML is in love with him. MC may be too busy with his revenge to consider romance, but ML is willing to resort to various bets and tricks to get MC to fall in love with him too.
MC catfishes the wrong guy! He cannot get rid of ML no matter what measure he resorts to. ML is insistent on meeting his "girlfriend" in real life and does outlandish things to maintain their relationship's security.
Kamisama no Uroko