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.
ML is a ghost that won't leave MC alone. Even when MC tries warding it off with a talisman, ML targets other people instead to coerce MC into changing his mind—pretty crafty.
Although their first meeting is anything but cordial, ML uses his influence to force MC into becoming his guide partner and his room mate. He won't let MC sleep or even shower by himself, and later coerces him into sex.
Kamisama no Uroko