Gin's parents abandoned him in the forest when he was born. He was wailing in the forest, attracting the attention of Yokais (Demons) that lived there. When the forest lord placed a mask on baby Gin, he stopped crying. Seeing that Gin was a harmless soul, the Mountain God decided to save his life by casting a spell on Gin that would maintain his body and cause him to age a quarter slower than a normal human would. However the spell comes with a cost; whenever Gin comes into physical contact with a human, the spell would obliterate him, causing his body to disappear.