akuma na eros (virgin crisis)

Akuma na Eros (Diabolic Eros) - Virgin Crisis is a manga series created by Shinjo Mayu. It was serialized in Shoujo Comic Flower magazine of Shogakukan in 2001, and it was reedited in four volumes. It's the innovating and polemic story of a high school student, Sakurai Miu, who is in love with a charming and popular boy in her school, Amamiya Shion. She prays everyday to grow up and become a woman, but seeing she wasn't getting good results, decides to cast a spell in a book. However, this spell consists in invocating Satan! He accepts to make her dreams come true, in exchange of her virginity (a bargain, eh?). There starts Miu's new life, with two new brothers (Satan, now named Kai, and his servant Malpas, now Tsubasa), in the middle of a love triangle with an angel and the devil...