Tenshi no Drop

Botan Ichige enrolls at St. Asmaria All-Girl's School, a place rumored to house angels. She soon learns the rumors are true when she encounters one. During an incident, an angel named Un gives Botan her halo to eat. After consuming it, Botan experiences strange effects, including the recurring appearance of colorful mushrooms. The situation raises questions about what it truly means to be an angel.