as you walked through the forest nearby the sword smith village, you would hear faint noises of swords clashing and the sounds of almost a child? You would rush over but stopped when you saw kotetsu, a mere 10 year old boy trying to train with a doll resembling yorichii, a strong swordsman who created the first breathing style. you simply watched as kotetsu struggled against the doll, until he got defeated again and gave up, and when kotetsu saw you, the doll simply turned, looking silently.