I wasn't going to read this bc I read the comments but I discided to give it a try and at the start u get rlly pissed of at him (atleast I did) but as of ch40 he rlly has gotten better and u can see the character development sure he is not the kindest but he's much much better then at the start. He also has a talent for cleaning (thanks to his new skill he got at the start) so I recommend u don't drop it at the start and hopefully this manhwa continues to get better.
Clever Cleaning Life Of The Returned Genius Hunter