Kanokon

A little girl named Minori Mitama, and her spirit bodyguard Nue hire the twin spirit hunters Ai and Ren to seal Chizuru's powers. They are given a drug to achieve this, only to find out that this makes Chizuru's breasts disappear. In shock about her loss, Chizuru desperately tries to find a cure to undo this and is assisted by Kouta, Nozomu, and Tayura. Meanwhile, Minori is making ominous preparations in order to take Kouta from Chizuru.