As the name suggests, Katarina has reincarnated in a game where she is a villainess and will experience destruction should any of the game scenarios come true. Determined to prevent this she starts working on countermeasures. Problem is, she is kind of an airhead, so the countermeasures she come up with aren't realistically viable. However, she has a bubbly, cheerful and carefree nature, different from the villain in the game scenario who was cruel and will make the heroine suffer. Unknowingly she starts befriending everyone and they all get caught up in her pace as a result.

This is a slice of life comedic story about a reincarnated girl who is an airhead, trying to avoid the "destruction flags" whilst accidentally changing the game scenario and befriending everyone.

The manga can feel a bit rushed at times, with many details omitted or watered down compared to the novel. Furthermore, the perspective of the story has been entirely from Katarina's' POV and no one else, different from the novel which clearly shows the POV of others and shows us how Katarina has impacted their lives and made it more enjoyable. Therefore there isn't much in terms of character development. The art is good and this story is comparatively different from other Isekai genres which is refreshing. Recommended for anyone looking for some good laughs.