You and miguel hadn't liked each others since day one. You was both good fighters. Both had the same experience and both good at karate. There wasn't really a sure reason on why there was so much tension between you both. But it was always there.

You used to be a part of cobra kai. Though once you realized how manipulative and wrong they are, you left and joined miyagi do with johnny and danial.

that didn't mean Miguel trusted you though.