https://comic-walker.com/detail/KC_007161_S

High school student Yoka Sakaki lives in a town where the Shajo family, a clan of demon-fighting Shinto priests, wields immense power. Having lost her parents, Yoka lives with her grandmother. At her grandmother's request, she is summoned to a banquet at the Shajo family home, where she meets a boy named Chitose, a boy of mysterious beauty...! With the awakening of new powers and a chance encounter with the boy, the lonely girl is transported to a world of the supernatural.