Fang was born to a Sakhalin Husky father and a European wolf mother who escaped a circus. Severely injured as a puppy, he was rescued and raised by a hunter's daughter, Sanae, forging a powerful bond. Yet his wolf nature prevented acceptance among the village hunting dogs, trapping him between domestic life and wild instincts.

Taken to the circus by his caretaker, he observed other animals with fascination but faced mistreatment, deepening his untamed spirit and distrust of human society. Unable to adapt to village existence, he finally departed human company. Embracing his wild heritage, he rose to lead a pack of feral dogs in the wilderness, shifting from human dependence to primal leadership.

His defining trial was confronting Gon, the man-eating bear that killed his mother. This battle served as both personal vengeance and a test of his role as protector. It fused his canine loyalty and lupine ferocity to meet the threat.

Throughout his journey, he remained suspended between Sanae's world and the untamed wilds of his pack. His hybrid origins shaped his actions and ultimate fate as a guardian against nature's dangers.