: Overwhelmed by the "screams" of his dying kin, Nai snaps and slaughters the human guards. He renounces his old name, adopting Millions Knives to represent his mission as the avenger for the tortured Plants.

: Luida shows Meryl and Roberto a verdant garden dome. She believes that by cultivating flora, they can eventually lessen the burden on the Plants.

: Zazie, revealed to be a collective consciousness for the planet's native worms, poses a grim question to Meryl: who deserves to inherit this world—the destructive humans or the vengeful Plants?. Key Episode Details Title : Millions Knives

: Knives attempts to force Vash to join his crusade, even demanding that Vash kill their surrogate mother figure, Luida. Vash refuses, leading to a violent clash between the brothers.

: Nai and Dr. William Conrad witness human technicians pushing Plants to their absolute limits for a "Last Run"—a final, forced harvest of energy that leaves the Plants as withered husks.

: Luida and Brad reveal they have known Vash for 150 years , extending their lives through periodic cryo-sleep to maintain their ship.

In episode 9 of Trigun Stampede , titled the series dives deep into the tragic divergence between Vash and his twin brother, Nai, while setting the stage for the final conflict in the present. Flashback: The Birth of Millions Knives

The episode centers on a pivotal flashback showing Nai's transformation into the antagonist Millions Knives.