This one was interesting, if a little bit too stretched thin and I would have preferred a more proactive uke, but I somehow understand what the author wanted here - to show how a neglected, overworked, frankly pretty pathetic ML turns his life around, not in an conventional of indeed normal way, but quite realistic. But the same old, same old cliches really rubbed me the wrong way - the debt ridden protagonist, the dead parent, the greedy sibling, working 24/7 to cover the bills... This was boring. So many manhwas center around this and by now I'm quite sick of it. This perhaps ruined the chance for this manhwa to be top tier, but it's solid anway.
The Seme was a good character. You see he's at times tender and caring in his own way, but he's a sadist and a terribly spoilt bully who wants things his own way or no way. But the toxic, dysfunctional relationship between him and the uke - so great! As I said, uke should have been less of a crybaby and more clever if I had my way, but even with his naive, weak persona, his interaction with the seme made this manhwa worth reading. How he slowly falls for him, despite knowing the seme is a killer and a mafioso. Loves this!
However, the manhwa was stretched thin in the middle, and some IMHO interesting points were never touched upon (more about seme's family, more about uke's brother, more about uke's part time jobs).
Overall, this was good. Seme was very good, uke wasn't to my taste, but he fit the story well enough. More background into and some more diversity in the story would have elevated this, but for yandere fans like myself, dig in! Seme is a delicious yandere, you'll love it!