How Old Is Roronoa Zoro in Gintama

Fans of both One Piece and Gintama often delight in the latter's signature brand of satirical humor, which famously parodies countless other popular anime and manga. It’s natural to wonder if iconic characters like Roronoa Zoro, the legendary "Pirate Hunter" and master swordsman of the Straw Hat Pirates, have ever made an appearance or been parodied within Gintama's chaotic universe. While Gintama frequently references popular culture, directly integrating characters from other series into its narrative with their canonical ages isn't its style....