black mist's Things

Pls help me, I read this bl manga before and I forget the name of it. Plsss help me find it again

The bottom is a demon while the top is a human (GOOD MAN) to be exact. The only thing I remember is that there is a chapter where the human died and the demon made a contract with the angel to revive the man in exchange he will come back to the heaven (he is a former angel). After being revived the man lose his memories with the uke but when he remembers the uke is already locked up in heaven. So the seme save the uke in heaven. The ending part is the demon waited for the human to die and be in hell, the human become a demon apprentice and they live O think happily ever after.