Nami and Robin discover that the true thief of their memories is not the boy, but a hypnotic seahorse named Tatsu. The seahorse steals memories to eventually become a "Sea God".
Monkey D. Luffy, Roronoa Zoro, Nami, Nico Robin, Sanji, Tony Tony Chopper, Usopp, and the Seahorse (Tatsu). OnePiece_Ep_223_ITA.mp4
The episode is part of the Italian dub broadcast, often titled "Zoro mette a nudo le zanne!" or similar variations depending on the network. Nami and Robin discover that the true thief