Status for season 2
The show is NOT cancelled, but there is no official status yet on season 2
Plunderer Season 2 hasn't yet been officially announced by its production company Geek Toys or the original network Tokyo MX. The action-fantasy anime series premiered on January 8, 2020, with its final episode airing on June 24, 2020. It has now been almost 24 months of complete silence from the producers of the anime.
However, before we give up on Plunderer Season 2, it's worth remembering that many shows experienced renewal or production delays due to the pandemic situation. Plunderer could also be just another victim. Besides, such delays are ordinary for anime series since producing them takes a lot of time.
Additionally, about 38 out of the total 77 chapters of the manga have been adapted into the anime's first season. That still leaves a lot of source material for Plunderer Season 2.
About the show:
In a post-apocalyptic world, each citizen has their identity branded with their own "Count," which defines their livelihood. But a mysterious figure has an agenda to steal away these Counts.