"Hey, are you alone? Then come and play with me!" This is the heroine's opening statement for the first time, simple and clear. However, her actions are a bit scary. She holds a baseball bat in her right hand and points it at our male protagonist, Natsume Shiki, with a look full of threats. ——This is the first encounter between Natsume and Yamaguchi Mahiro. The heroine is a violent girl, and she will beat people with anything that can be used as a weapon. Of course, after meeting Natsume, the targets of her defeat were not only people, but more monsters. Natsume was alienated because she was gifted with special powers since childhood, and Yamaguchi was alienated because of her violent nature. When these two people met, what they created was a farce. The text is healing, but more importantly, the heroine brings laughter to everyone. This article is not a Mary Sue, not a virgin, it is just a funny and warm (bloody) story about the childhood sweethearts of a violent maniac and a boy who can see monsters.