Jiburiru the Devil Angel

Rick cute, naive girl, just budding romance with her childhood friend Naoto. But suddenly their lives vmeshivaetsya uzhastny demon-named, Asuma who wants to kidnap Riku, and angel Loriel that wants to thwart the plans of Asuma and zaschit Rica. Rick want to get as the forces of good and the forces of evil, as she unknowingly, she has the gift to transform into a powerful "angel of darkness" under the name Gibil. But, in order to gain access to that power it must gain experience and strength, through having sex.