Hayaku genkotsu

Hayaku Genkotsu translates into "fast fist" was the master of the White Mountain Dojo, he taught Renji everything he knew about the arts of unarmed combat, and fighting for what you believe in. Fighting in a just cause, and to defend the ones you love. To only fight out of self-defense, or to only fight when practicing to hone your skills. He was taught never to let previous emotions effect his current life, which he finds extremely hard... as his family died in a fire.

Mr. Genkotsu, would often wake up early mornings, and train with Renji for sometimes up to 18 hours at a time. The two of them were to spar, and continually sparing, all the while both of them increased their skill, until one day Renji almost surpassed his master. It was at that time he chose to have him embark on his own. Saying that he had taught him all that he knew, and that if he wished to hone his skills any further, that he would have to on his own.