An insular, agoraphobic boy named Wataru Kurenai begins his battle against the Fangire as Kamen Rider Kiva, a battle with connections to a conflict from 22 years in the past...

After a disastrous attempt to try to warm his neighbors up to him with a violin performance, Wataru pleads with Nago to help him become more confident. Nago tasks him to trail Megumi as her bodyguard, but he finds himself working with a strange man claiming to also be working for Nago!

Bishop begins the preparations for the wedding of Taiga and Mio, but Mio admits she is in love with someone else and can’t go forward, enraging Taiga. Not realizing it is Wataru she loves, Taiga enlists the help of Wataru, who is himself blind to Mio’s true feelings, to try and determine who she has feelings for. When she meets with Kengo in the park, Taiga confronts her as Kengo attacks Wataru, but Jiro brings Watary back to Castle Doran to observe a mysterious sword embedded in the wall, said to be extremely powerful…