There's two seasons covering 90/100 chapters of the manga, but the final 10 chapters and the manga spin-off REIGEN (set after the ending) remain unadapted. Imo there's enough material there to make a 1980s-style multi-episode OVA if not a full Season 3.
Nevertheless, both seasons have a very satisfying conclusion and work well even as stand-alone stories.
There's two seasons covering 90/100 chapters of the manga, but the final 10 chapters and the manga spin-off REIGEN (set after the ending) remain unadapted. Imo there's enough material there to make a 1980s-style multi-episode OVA if not a full Season 3.
Nevertheless, both seasons have a very satisfying conclusion and work well even as stand-alone stories.