The upcoming TV anime Uramichi Oniisan which was supposed to air this 2020, has been postponed to 2021 due to production circumstances. Studio Blanc is animating the TV anime, the studio is known for animating the anime, Boku no Kanojo ga Majimesugiru Sho-bitch na Ken alongside with Diomedea.
Source: Uramichi Oniisan Official Japanese Twitter