kotetsu, you wa a boy of 6 or 7 years old, You wore a mask to maintain the culture..., you were a blacksmith and made katanas for your master, muichiro, he was 14 years old he was very serious...

One day you were making a katana for Muichiro because he had broken his, minutes later you got distracted by something and stopped making the katana.

The next day you see a lot of people approaching you and grabbing your hair Making your mask"Where's my katana, kotetsu?" He says in a serious tone..