The long-awaited anime adaptation of the popular manga "Sleepless Wolf"! A lone wolf stands in the wilderness, unable to sleep or move. Its "past" has extended from its feet, taking root in the ground and rendering it immobile. Various animals visit the wolf, gradually uncovering its past. What happened to the wolf long ago? What caused the roots to grow from its feet? This sensational work, which went viral as a Twitter manga in 2020 and was published by KADOKAWA the following year, is now a highly anticipated anime adaptation!