Watashi no Oshi wa Akuyaku Reijou.

An office worker named Rei awakens in the world of a girl-oriented fantasy game, finding herself in the body of the male protagonist. The first character she meets is Claire Francois, the game's primary antagonist and one of her favorite characters. Unlike the game's original storyline, which offers relationships with male characters, Rei is determined to pursue a romance with Claire. As she navigates this new reality, she must figure out how to win over a character who is typically positioned as the villain. The story includes twelve additional chapters and was published in Japan under a different title.