Where to continue the Undead Unluck manga

Undead Unluck by Yoshifumi Tozuka, 2020. The manga is complete at 239 chapters across 27 volumes.

• Season 1 (24 episodes): Continue the manga from chapter 53 in volume 7. The finale takes the opening and closing pages of chapter 53 but leaves the middle out, so read it in full or watch the Winter Arc special first, which adapts exactly those pages.
• Winter Arc (1 episodes): Continue the manga from chapter 57 in volume 7. A single special that picks up straight from Season 1 and fills in the middle of chapter 53 before carrying on.