Enemies to Lovers?

Heeseung & Sunoo were partners in crime, always getting into troubles at school, at work, and at public places, but it didn't last long until they became rivals. Heeseung, the son of the richest mafia man in the whole world, a total heartthrob, gay, deeply inlove, or should I say, obssesed with Sunoo. Sunoo, the son of the most dangerous mafia woman in the whole world, cold and serious, secretly inlove with Heeseung. Story Heeseung was smoking in a dark alleyway, it was night at that time, and at that time, Sunoo was walking around the neighborhood, not noticing that Heeseung saw him, Heeseung smirked and slowly approached him from behind.