Junichi Kaito (海東 純一 Kaitō Jun'ichi) is Daiki's older brother within his home world and Junichi Shimura's incarnation from Kamen Rider Decade.
Like Daiki, Junichi is also a Kamen Rider, Kamen Rider Glaive (仮面ライダーグレイブ Kamen Raidā Gureibu), setting up the operation to overthrow Fourteen. However, Junichi was actually a double agent who worked to flush out the last two Kamen Riders of their world until Daiki unknowingly captured him, and as a result, played the role as Fourteen's puppet right hand in charge of the area management committee.
However, once Fourteen is destroyed, freeing everyone else from the brainwashing, Junichi reveals the truth with intent to be the next Fourteen. In spite of not being able to kill Daiki, with Tsukasa affirming he still has his free will, Junichi considers his brother dead to him and leaves.
Unlike his brother Daiki, Junichi believes in creating world peace through controlling mankind, and is willing to work with the Undead to do so. However, he was unable to kill Daiki when given the chance, showing that he does still have some humanity left in him.
Kamen Rider Glaive
- Rider Height: 203cm
- Rider Weight: 100kg
- Ability Perimeters
- Punching Power: 3 tons
- Kicking Power: 5 tons
- Maximum Jump Height: 35 meters
- Maximum Running Speed: 100m/5s
Glaive is the new Blade in the World of DiEnd. He uses the original 5th Ace Change Keroberos Rouze Card, created by Tennoji during the TV Series, which has been incorporated into a new Rider System, the Glaive Buckle, based on Leangle's Open Up System instead of Blade and Garren's Turn Up System.
- Unlike his original counterpart, he is not the Albino Joker.