I'm happy that he ain't gonna spend the rest of the year reflecting on what he had done in the past when he almost have the shot on undisputed title with Inoue. This is much better for him rather than forcing himself to shrink at a certain weight needed that he'll surely struggle. In this weight class, I hope have no issues because he needed to climb through the ranks if he still want to be a belt holder.
Should be no problem now on this weight division but hopefully, that gastritis won't ruin the fun here. That medical condition is unpredictable and Casimero can be hit with that anytime. But this time I think they are more prepared and during the time when they are almost close fighting against Paul Butler, he seems healthy at that point.
Casimero has no room for losing this match. If he loses here, I think it's better to just retire or people should not expect to him anymore.
Well, if he is going to lose against this Akaho who also have nothing to lose then it is indeed much better to retire from the industry because he have nothing to prove. What more he can do in the upper ranks if he can't even defeat Ryö Akaho.
By now, as you said, he seems fit and healthy so that gastritis should be the least problem for them. AFAIK, gastritis is unpredicitable but it can be avoided by a proper diet and exercise. So keeping Casimero fit might do the trick.