As You Wish, SisterSister-sama no Oose no Mama ni; シスター様の仰せの魔々に; Sister-sama no Ouse no Mama ni; As You Wish, Sister; Дьявол на побегушках

One day, the demon Clod comes to high school student Sister Kurisu Ibarakawa. He says that he has a contract with Kurisu's estranged father to make her happy. He is very serious even for a demon, and says, "I will definitely make you happy," and uses various kinds of magic.... Will Kurisu be able to follow the path of a pure and righteous sister?