Meredy, a mob character who is killed at the beginning of an otome game, is reincarnated as a "corpse lady." Her goal is to prevent the encounter between the game's mastermind, the first prince Jake, and the "Book of Demon Summoning," which is the key to avoiding the bad ending! Meredy uses her memories from before her reincarnation to get in his way, but for some reason, she is chosen as Jake's "playmate" instead, who asks, "Would you like to make a deal with me?" Set in the school of an otome game, a love romance begins in which a mob lady VS a yandere mastermind prince chase each other