GINGA: NAGAREBOSHI GIN

Born in the bitter cold of the Ouu Mountains as the son of Riki, the mightiest bear-hunting dog, is the magnificent tiger-striped puppy, Gin! To defeat the murderous Akakabuto—who seeks to build a stronghold deep in the mountains of Ou after defeating his grandfather and father—Gin joins the Ouu Army, his youthful blood boiling with determination!! With only three months left until the final showdown with Akakabuto, his eyes are set on finding true “men” who will fight alongside his comrades to the bitter end against Akakabuto, as he races across the entire land of Japan!!(Source: Toei Animation, translated) — Description from AniList community (anilist.co).