Profil Tsukasa Kadoya

Tsukasa Kadoya (門矢 士 Kadoya Tsukasa^?) is Kamen Rider Decade (仮面ライダーディケイド Kamen Raidā Dikeido^?) from the series of the same name, along with a few other Kamen Riders, teams up with The Shinkengers in one episode of Shinkenger: episode 20 The Father and Son Bears , and two crossover episodes of Kamen Rider Decade: episodes 24 ("Arrival of the Samurai Sentai", original title 見参侍戦隊   Kenzan Samurai Sentai) and 25 ("Heretic Rider, on Call!", original title 外道ライダー、参る！   Gedō Raidā, Mairu!).

Personality

Tsukasa is an arrogant, young man without any memory of his past. As a photographer, his photos never come out right, which is later revealed to be a sign of his world being slowly destroyed by the convergence of the other Kamen Riders' worlds. To save his world, he transforms into Kamen Rider Decade.

TV Series

In the guise of a kuroko with a strange card in hand, Tsukasa learns that his lack of knowledge is due to the world not having any Kamen Riders as he witnesses the Shinkengers drive off the Nanashi. Curious about them, Tsukasa uses his guise to learn more about them and their world before fighting the Ayakashi Chinomanako who has stolen the Diendriver from Daiki. He realizes that the monster is the reason why he is in this world as Chinomanako escapes and becomes the world's first Kamen Rider.
He attempts to fight the Chinomanako but is stopped by Narutaki saying that his actions will only bring doom to the world. After being given the advice to do the right thing by Hikoma Kusakabe, Decade later helps the Shinkengers with the card revealing to be the Rekka Daizantou which he uses to destroy Chinomanako alongside ShinkenRed using the Blade Blade. After which, Tsukasa and the otherworlders leave the Sentai world.