MC understands (selectively) that some people view him as somewhat inhuman due to some of his actions, but doesn't realize he feels inhuman instinctively. Sees himself as fully human.
MC believes he is fully inside a game he used to play and does not realize the "characters" cannot fully perceive him as anything but inhuman.
MC believes she has transmigrated into a romance novel as a villainess character mistreated by her father. Actually everyone saw her corpse rise from the dead and is living in a horror novel.
MC makes a wish to read all known books (I think, can't quite remember rn). He is given immortality and an "infinite bookstore" to do this, and enjoys recommending books to his customers. Comes off like a devilish genie-like character, where he always has the "book"(/magic spell) you needed, and is trying to spread evil magic for his own ends.
The Painter Who Draws Dungeons