Kamen Rider Den-O Episode 7

After a night out on the town while possessed by Urataros, Ryotaro awakes to find himself in the home of a strange woman named Yumi Saito. As he rushes out of her home, her ex-boyfriend Tomoya Obayashi passes by and becomes jealous. Meanwhile, people associated with anything that plays Vivaldi's The Four Seasons' First Concerto, "Spring", are attacked by the Crow Imagin, who has made a contract with Yumi.