>"Eientei is a mansion deep within the Bamboo Forest of The Lost, it's populated almost entirely by rabbits and rabbit youkai. With those two being the more notable of them. Though there are two non-rabbits who also live there, but let's just say that one of them isn't on Mokou's good side, to put it lightly. That would be Kaguya Houraisan, an exiled lunar princess. The other one is the one who actually creates the medicines, Reisen merely delivers them. Eirin Yagokoro, a brilliant doctor from the moon."