Bubbleblabber’s Definitive Top Ten Adult Animation Films Of 2021 (International)
9) Gintama: The Very Final Review (English Dub)

There is absolutely nothing else out there like Gintama and the anime world will be just a little bit darker now that this pivotal action-gag-genre breaking-whatever anime series has concluded. If Gintama: The Very Final is in fact the conclusion of this anime’s 15-year saga then it’s an extremely satisfying way for the series to go out. It reaches an incredibly moving conclusion that finds the perfect tone between its disparate sensibilities and the emotionally resonant moments never get too sappy or melodramatic. Gintoki, Kagura, Shinpachi, and the rest of the rabid characters that fill the Gintama universe have always played by their own rules and that’s exactly how Gintama: The Very Final decides to say goodbye.
"There are also other characters that come and go (also owned by the Warner Bros. Discovery conglomerate media company)."
Huh. Is that just referring to other characters from the show itself, or is this implying that the new season is going to have cameos from other WBD IPs