 If you liked Kuroshitsuji |  ...then you might like Chainsaw Man |
Both have a focus on the concept of demons including a character who works with them in order to resolve a certain personal problem that they have and both having a pretty sick style of comedy as well too. And both also focus around resolving cases as well too for their respective employers that also deals in other supernatural threats as well too.
report Recommended by Disapeared_Ghost
Desperate protagonists willingly to sell their souls to demon. With twisted character and plot development. They are completely different, but same. But different.
report Recommended by deesintegrashun