Seijuuden: Twin Dolls / 聖獣伝 ツインドールズ

Mai and Ai Amatsu are beautiful and powerful twin sisters descended from a Tennyo angel. However, part of this legacy includes fighting off sex-starved demons and protecting the child-like boy Onimaro from evil forces. Can Mai and Ai carry out their mission in life and retain their chastity at the same time? (Source: Animetric)...