On his birthday, Lin Yu, an ordinary college student, receives a mysterious package: a Kamen Rider Decade belt. The moment he touches it, he is swept into the multiverse of Armor Hero. Armed with Decade’s power to “destroy all worlds,” he unexpectedly becomes a protector spanning worlds such as “Legend of Light and Shadow,” “Xingtian,” and “Nawa.” His catchphrase, “I’m just a Kamen Rider passing through. Remember that!” is both a declaration to his enemies and a self-mocking acknowledgment of his status as an outsider. This is a love letter to tokusatsu fans: when Flame Dragon Hero’s “Flame Saber” resonates with Decade’s “Ride Cards,” and Xingtian Hero’s “Heaven, Earth, and Human Laws” echo the Kamen Riders’ “spirit of the contract,” the story has already grown beyond mere fighting. Lin Yu’s journey from “bystander passing through” to “link between worlds” proves that a true hero’s power begins with refusing to accept a moment as it is, and ends with tenderness toward all life.
“When the world needs saving again, I’ll be a Kamen Rider just passing through. But this time, I won’t pass it by.”