Episode 9 of Trigun Stampede , titled "," serves as a pivotal bridge between the past and present, detailing the ideological schism between Vash and his twin brother, Nai. The Birth of "Millions Knives"

: It is revealed that Brad, who has survived for 150 years through cold sleep, is the engineer behind Vash’s prosthetic arm. Returning to the Present

: Knives discovers that humans are overworking Plants to their breaking point, causing them to turn red and eventually die.

As the flashback concludes, the narrative shifts back to the current timeline.

: During a confrontation, Vash inadvertently opens a " gate "—a destructive portal that resembles a black hole.

: To prevent Vash from being pulled into his own portal or further manipulated, Knives severs Vash’s arm.