As You Wish, Sisterシスター様の仰せの魔々に; Sister-sama no Oose no Mama ni; 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?