Here's an idea that I've been having. It requires that you go by the anime timeline where Miu has Kenichi go to Ry?zanpaku before his Karate club fight..
What if the Masters convinced Kenichi to not fight against the karate club member (I can't remember his name) due to his inexpierience and have him wait before challenging anyone.. This may not seem like much, but Kenichi's victory is what makes him a target initially.
What if the Masters convinced Kenichi to not fight against the karate club member (I can't remember his name) due to his inexpierience and have him wait before challenging anyone.. This may not seem like much, but Kenichi's victory is what makes him a target initially.