Kumi Asakura

A girl named Mitsuki Kanzaki lives with her step-brother Yuya after her mother remarries. One day, Mitsuki is possessed by the self-proclaimed spirit of a young girl, Hiyori Kotobuki. Hiyori (in Mitsuki's body) must fall in love with Yuya to move towards the "Gates of Heaven."

An angel (Kumi Asakura) gets send to earth to help high school student Yuuta (Kohei Sasaki), who has good friends but hasn't had any luck with love, to find exactly that...