One Piece, Vol. 52

Determined to save his brother Ace, Luffy sets his sights on the impossible: breaking into the most secure prison in the world, buried deep beneath the sea. With Boa Hancock's reluctant help granting him passage, Luffy descends into the prison's nightmarish depths, facing bizarre and deadly inmates on every level. The stakes rise with each floor as the clock ticks down toward Ace's execution.

• Brand: Viz Media
• Officially Licensed: Yes
• Author/Artist: Eiichiro Oda