The reward for beating the final boss in a game was actually transmigrating to another world as a cute girl?! And now I have to become a hero and defeat the Demon King.
Bad news: "I've turned into a girl, and my System is a cuddling System. I can only gain power by cuddling, and the more I cuddle, the stronger I get..."
Good news: "It wasn't just me. All four of us changed."
(Gender bender, one protagonist with multiple love interests, protagonist is the bottom. The cover features all four leads: the blonde is the protagonist, and the other three are supporting leads.)
