@Koal what do you mean? Sawamura's whole backstory is tied with Sendo! They fought as delinquents and Sawamura's teacher begged Sendo not to, and then told Sendo about Sawamura's backstory. Sendo also visited Sawamura in the hospital
@Ca_Calico
Oh really? was that talked about in the anime because I don't remember seeing it there. I watched the anime and then picked up on the manga.
@Koal
I believe it was mentioned in the anime, it really was Sawamura's only background and connection so I'd honestly be surprised if they did leave it out. I just finished the Miyata vs Randy fight
Sendo is awesome, but since when does he have a World Title opportunity (even if distant)? At this point all he is is a former Japan National Champ with a very brief reign at that.