Tengen was born into a family of nine children within a shinobi clan. Three of the nine children died before they even reached 10 years old due to overzealous training. With the remaining six of his siblings, they were forced to kill each other on their abusive father’s orders without them knowing who they fought, as their heads and faces were covered with masks. Tengen realized his father's trick only after he had killed two of his brothers. By the age of 15, seven of his siblings