I Picked Up the Villain from a Failed Romance Fantasy

"Has a day like this finally come for me...!" I was thrilled, thinking I'd entered a romance fantasy novel, but as luck would have it, I ended up in a story the author had abandoned. Consequently, the world went to hell and collapsed the very next day. All I have left is a (damn) sturdy mansion and the (cursed) female lead's diary. "Meow!" The only consolation is that I picked up a cat... But while I was at it, I accidentally picked up a half-dead villain too. "Do you not need a butler here?" "I don't." "A chef?" "Hmm." "Isn't it lonely living alone? If you hire me, every night..." "Hired! Start work tomorrow." Even in a world that's gone to absolute shit, a handsome man is alwa...