Mumei was taught that she needs a special medicine in order to hold back her Kabane urges. Currently, the only one who can provide her with the right medicine is Biba.
Being a kind, generous person, Biba provides Mumei with lots of his special white medicine, and even administers it personally, orally and vaginally. He even gives her a full-body massage beforehand! Isn’t he a wonderful brother?
*All characters depicted in this work of fiction are adults, regradless of their visual representation or textual description and are not based on any real person*