Overall, the Gintama anime is a decent adaptation of the manga. There are some minor differences for better animation or pacing, but the core story and characters remain the same.
The Gintama anime is considered a pretty faithful adaptation of the manga. It keeps the essence and storyline intact. Though there are occasional variations to make it more engaging on screen, they don't stray far from the original.
It follows quite closely. The Gintama anime mostly adheres to the manga plot, with only a few tweaks here and there that don't significantly change the core story.