Kamen Rider: Modifying Delta in 555

Shun Kanzaki, a genius scientist at Smart Brain, was silenced after uncovering the terrifying truth about the “King of Orphnochs.” On the brink of death, he injected himself with an experimental suppressor, “Lazarus-1,” becoming the only **half-Orphnoch**. A life-eroding **gray mark** formed on his left shoulder, leaving him neither human nor monster. After stealing and modifying the Delta prototype belt, he made this **instrument of torture**, powered by nerve-searing pain and ruptured coolant tubes, his only weapon of revenge.

As the “Executioner,” Shun hunts Orphnochs in the darkness, but the suppressor’s backlash brings him to the brink of collapse. He forms a **blood-red alliance** with the ambitious Masato Kusaka, treading a razor’s edge between exploitation and betrayal. He also clashes fiercely with Takumi Inui, who fights to protect humanity, and Yuji Kiba, who seeks coexistence. When Smart Brain’s ultimate conspiracy, the truth behind the “King’s Vessel,” comes to involve him, Shun must make his final choice between becoming a complete beast and destroying himself.

This is a dark epic of revenge, technology’s backlash, and the search for identity. Shun Kanzaki forges weapons with reason and bears their cost in his own flesh, carrying out executions against both himself and his enemies amid the ashes, until that silver light burns away the last mark like a meteor. After the story of 555 ends, the protagonist will join Dai-Shocker and fight as the third Rider of Decade. Unlike Decade, he will go to the main world rather than a parallel world, and his role will be similar to a weakened version of Goodwill.