Kamen Rider Decade

Kamen Rider Decade (仮面ライダー, Kamen Raidā Dikeido, "Masked Rider DCD"/"Masked Rider Decade") is a Japanese tokusatsu drama and the 23rd entry of the Kamen Rider Series and the 10th entry of the Heisei Kamen Rider Series, commemorating the Heisei Kamen Rider 10th Anniversary. It premiered on January 25, 2009 and joined Samurai Sentai Shinkenger on TV Asahi's Super Hero Time block. After Kamen Rider Decade concluded earlier than usual on August 30, 2009, Shinkenger was joined by Kamen Rider W, which continued the the Heisei Kamen Rider 10th Anniversary campaign.

The catchphrase for the series is "Destroy everything, connect everything." (全てを破壊し、全てを繋げ, Subete o hakaishi, subete o tsunage).

Plot
Natsumi Hikari has repeatedly been having dreams of the Rider War, where every single Rider from the Heisei-era attack one being, a warrior known as "Decade." In reality, she lives with Tsukasa Kadoya, a young man who doesn't seem to be able to call Hikari Studio home. One day, monsters from different dimensions begin to attack people, with the world starting to fall in chaos. Tsukasa, who had been separated from Natsumi, meets the mysterious Wataru Kurenai, who informs Tsukasa about his title as Kamen Rider Decade, the Destroyer of Worlds. Discovering that the nine universes of the Kamen Riders from the Heisei-era are merging into one, which would result in the collapse of multiverse, Tsukasa inherits the mission of traveling across these worlds to eliminate the anomaly in each, while embarking on a journey to find one world where he can call home.

Ep. 23: End of Diend
Nearly killed by Lance, Kaito is spared when Larc stops her partner as he reminds her that he is the reason that Junichi is under Fourteen's control. After escaping the angry mob, parting from Haruka and Shin, Kaito and Tsukasa find Natsumi who tells them that Yusuke has been kidnapped by the Roaches before Junichi arrives. After remembering the events leading to his brother's enslavement, Kaito is reluctant to fight as he and Tsukasa transform to follow Junichi, leaving the brain-washed Yusuke behind and taking Natsumi to undergo the process as well. The next day, finding himself a wanted man as well, Tsukasa decides to help Kaito in spite of him refusing his aid at first. Using Kaito as bait to trade for the now brain-washed Natsumi, Tsukasa lures out Fourteen. While Lance and Larc battle Glaive and the Darkroachi, Diend and Decade battle Fourteen as he reveals his true form as Jashin 14. Though overwhelmed, Decade assumes Complete Form and uses Armed Hibiki's power to destroy him. Though the Roaches fade away and the brainwashed humans return to normal, Glaive attacks Diend and reveals that he willingly served Fourteen. With Decade holding Larc and Lance back, Diend battles Glaive on his own in a heated battle with neither wanting to kill the other. Tsukasa ends the battle, telling the brothers that Daiki now has faith in himself. Junichi leaves and Tsukasa and Kaito go off to the next world, a strange one that Narutaki hopes will overwhelm Decade.