A Cute and funny set of stories about two Rabbit Girl youkai - Reisen Udongein Inaba, Tewi Inaba and an Exiled Lunar Princess - Kaguya Houraisan along with Reisen's Master - Erin Yagokoto, and their everyday life in Eientei.
- Reisen Udongein Inaba: A rabbit who abandoned her allies and fled from Moon. She looks up to Erin as her Master.
- Tewi: An Earth rabbit who has lived a long time and has become a Yokai. She is supposed to bring good luck to anyone who meets her.
- Kaguya Houraisan: A former Moon Princess who drank an elixir of Immortality and was banished for it. Now she is the Lady of Eientei.
- Erin Yagokoro: A Pharmacist who lives in Eientei after fleeing from moon. Formerly in charge of Educating Kaguya.