Daisuke's grandfather Takeda Gohei is a hunter and very talented in training bear dogs. He has trained both Shiro and Riki, and during the beginning of the series, Gin. Five years ago he was out hunting with Gin's grandfather Shiro. They were attacked by the bear Akakabuto who ripped off Gohei's left ear. In return, Gohei shot out the bear’s right eye. Even though Gohei is a skilled hunter, he loses Shiro because of the monster bear and after a few years Riki.