Piece Episode 738 — One

One Piece Episode 738, "The Brothers' Bond - The Untold Story Behind Luffy and Sabo's Reunion," bridges the Dressrosa Arc by explaining how Sabo survived his childhood and why he was absent for so long. Sabo explains his amnesia triggered by Ace's death and his dedication to inheriting his brother's will. The episode covers his reunion with Luffy, his visit to Ace's grave, and the aftermath of the battle against Doflamingo in Dressrosa. You can watch this episode and the rest of the series on Crunchyroll or Netflix.