Piece Episode 422 — One

: Luffy successfully sneaks into the Great Prison, Impel Down, by hiding under Boa Hancock’s cloak.

: By showing the absolute security of the facility, the episode makes Luffy’s mission feel nearly impossible, effectively resetting the power scale after his recent victories. Draft Review One Piece Episode 422

: The episode effectively introduces the "Underwater Prison," emphasizing its status as an inescapable fortress where the world's most dangerous criminals are held. Review Highlights : Luffy successfully sneaks into the Great Prison,

, titled "A Deadly Infiltration! The Underwater Prison Impel Down," serves as the high-stakes premiere of the Impel Down Arc . It successfully shifts the tone from the whimsical Amazon Lily to a claustrophobic, high-security thriller. Episode Summary Review Highlights , titled "A Deadly Infiltration

: This episode excels at building dread. The transition from the bright, open seas to the dark, oppressive corridors of Impel Down is visually and tonally striking.

: Hancock undergoes a rigorous body search by Domino, creating a tense moment where Luffy’s presence is nearly discovered.