Lunan was running a pension in Japan when she was accidentally killed and reincarnated in another world. According to her black cat master, she is a "black witch" - a witch with the power to control the fate of the world. But she doesn't care about that! In order to fulfill her dream from her previous life, she has furnished an elegant Western-style house in the forest with witchcraft and started a hospitality inn with cozy guest rooms and bathrooms, a beautiful observatory with stars, delicious food filled with fresh vegetables grown in her vegetable garden, and knowledge from her previous life! And why are all the fluffy guests gathering at such an inn?