Nobuo is a member of Kyōshirō's pack.
Ginga Densetsu Weed[]
Hōgen Arc[]
He was left with The Kōga Elder along with the other puppies from his pack.
Russian Arc[]
Later he and the others joined the fight against Viktor and the other Russian Army Dogs.
Hybrid Bear Arc[]
He participated in the battle against hybrid bear.
Ginga Densetsu Weed: Orion[]
Nobuo and Ou army have caught in the volcanic eruption. He survives and is one of the Ou army Kurohabaki Jinemon locks the mine.
The Ouu Army[]
Later, the dogs are released and they participate in the final battle Kurohabaki Masamune against the troops.