One Piece Season 21

The Wano Country Arc (ワノ国編 Wano Kuni Hen?) is the thirty-first story arc in the series and the fourth in the Four Emperors Saga of One Piece, continuing from the Levely Arc.

The Ninja-Pirate-Mink-Samurai Alliance sets into motion their plan to recruit allies within Wano Country to liberate it from the control of the shogun Kurozumi Orochi and his allies, the Emperor Kaido and his crew the Beasts Pirates. The Big Mom Pirates follow the Straw Hats to Wano to get revenge for the previous events back on Totto Land, and Big Mom decides to form an alliance with Kaido in order to conquer the world.