Shiro grit his teeth and kept his eye on the ball. He'd been a catcher ever since elementary school, so his form was already good, he just needed the confidence to succeed.
PAH
"Oh that wasn't that bad…" Shiro muttered, surprised that nothing had gone wrong.
"Alright, next one will be a little faster." Ken stated.
He could tell that Shiro was nervous about catching for him, which was something that he couldn't allow to stick. Therefore he decided to slowly get the teen used to his top speeds by increasing the speed by increments.
After receiving the ball, Ken shifted his body and began his wind up.
PAH
Once again Shiro caught the ball easily, surprising even himself.
Ken continued to pitch his fastballs until they approached his max speed.
"Okay, next one is coming at full speed. Try and follow the ball."