A girl asks Katsuragi Shouta to take a picture of her with Enoshima in the background. Flustered by her cuteness, he snaps the photo and flees. He later discovers that she is an actress named Shinomiya Sana. A TV drama, Koisome Momiji, is set to be filmed in Shouta's town, with Sana starring in one of the lead roles as a passionate girl who wholeheartedly pursues the guy she loves. However, Sana has never experienced that kind of love. To practice for this role (and perhaps truly fall in love), Sana asks Shouta to be her boyfriend!