Name: Daisuke
Japanese name: 大輔
Sex: Male
Profession: Hunter

Daisuke was Gin's owner and his friend. He hears about the monster that attacks and kills humans in the mountains. With doubt in his mind, Daisuke drives to the mountain where he and Gin hunted when they were younger. Here he sees Weed and gets stunned by it. The puppy looks just like his old dog Gin.

Daisuke runs after the little dog and right into the jaws of Kaibutsu. Weed saves him and in return Daisuke brings Weed home and heals some shot wounds the puppy has. He releases Weed, but cannot forget about the puppy. Daisuke once more drives to the mountain to help Weed defeat Kaibutsu. This time he has his hunting bow and his friend Hidetoshi with him.

They find the dogs and Daisuke shots an arrow into the chest of Kaibutsu. When Kaibutsu falls over the cliff with Weed and his companions, Daisuke search for them. From a helicopter he can see that they are fine, and relieved he returns to Ou village.

However, he still worries about Weed. One day he meets a man named Shouji Sudou, who tells him about the two Great Danes Hougen and Genba, and Daisuke realizes what Weed is up against. On a council, the villagers plan to bomb Gajou to spread the dogs and possibly kill some of them. Daisuke does not take part in it, but stays at home.

During the final battle with Hougen, Daisuke finds the German shepherd, Jerome outside his door. He takes him in and heals the dog's wound. Shortly after, Daisuke can hear the howling of Weed going through the mountains and he now know that Weed has defeated Hougen.

In the Hokkaido arc, Daisuke and Hidetoshi hear the news of pet and stray dogs getting missing. As they encounter Weed, they decide to follow the young dog. They are lead to the scene of a battle between the Ou army lead by Weed and the Russian invaders lead by Victor.

He, Daisuke sees his old dog, Gin laying motionnessless on the ground. He cries out to him, screaming desperately for him to get up. Gin is revived by the sound of his old master's voice.
Together with Hidetoshi, Daisuke cares for the dogs wounded in battle and provides them with food and water.