Kohei Kumai

Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.

22 years after the disappearance of his father, Wataru Kurenai lives in an infamous "haunted house" where he is destined as Kamen Rider Kiva to fight Fangires, a species of life force-draining vampires who can assume stained glass-like monster body that his father fought years ago before his disappearance. The story is split between Wataru in the present (2008–09) and his father Otoya in the past (1986–87), slowly revealing the link between the Fangire race and Kiva.

Ren'ai Shinden is based on different types of forbidden love and consists of four different stories: Tsubasa no Kakera, Sayonara no Melody, Seifuku no Eve, and Unmei no Kodou.

When a powerful new foe known as the Legendorga arises in 2008, Wataru investigates the mystery behind the crisis, which brings him in contact with a man Nago once knew, Shiramine Takato, whose 3WA also possess their own Rider System. When Shiramine explains how everything began in 1986, Wataru uses Castle Doran’s Time Door to travel back in time, leading him to meet his father face-to-face at last. But has Wataru managed to change the future, or will the Legendorga still rise and enslave humanity?