I've been reading Demon Lord's Lackey pretty frequently and it's about a man who transmigrates to another world full of magic, several species of humanoids, qi, martial arts, and etc. He is called by a spirit to lead a library in his place. During this whole event he honestly believes that he is running a normal library, but in fact, it's the library of the Demon Lord who is an evil spirit entity. It has a mix of comedy, and action and slice of romance in it too.



Give it a read if you'd like here