This human, named Shinji in the anime, is a friend of Daisuke and around the same age as he is.
He first appears when he is skiing with Daisuke as Daisuke explains to the boy the history of the area and about Akakabuto. This hints that Shinji is possibly a tourist and not a local villager.
He is later seen when he comes to tell Daisuke that Gohē Takeda is acting violent towards doctors and later warns Daisuke about the old man's cruel methods of bear hound training. Shinji sometimes goes with Daisuke to see Gin's training and goes with him to the gun store.
There's a person named Shigeru (jap. 茂) that apparently is the same character as Shinji.
- He is widely known as Shinsuke due to a mistake in translation and fan websites.
- The name Shinji is only said in the anime.