beta
the mc was black haired and ml was blond
Idk much abt the story as I've read couple of chapters only, but as far as i remember, the mc transmigrated(?) into a demon world where he encountered with the demon king (?) ig, and the demon king didn't like him tortured him a lot, like didn't let him sleep on bed and etc
sounds kinda familiar to Devil On Top the ml isnt blonde tho so its probably not that
yeah
blonde is completely unaware how obsessed he is w the uke