Here is the definitive for the Gintama complete series:
Hideaki Sorachi’s magnum opus is a rare breed of storytelling. It’s a series that refuses to be put in a box, transitioning seamlessly from a parody of Dragon Ball Z to a gut-wrenching political drama about the cost of war. Whether you’re a newcomer looking to dive in or a veteran collector seeking the ultimate box set, here is everything you need to know about the Gintama legacy. What is Gintama? Gintama Complete Series