He really carried that monicker, as the "Monster" because of his power behind those punches. And it's now being magnified after knocking out one of the legends in boxing. And then send signals to other bantamweights and even to the next weight class although that power will have to be check if he can carry it to the next level or not. I guess life imitating art here, we all know that there are Japanese anime about sports, i.e basketball boxing and others and maybe there will be future Japanese character similar to Inoue, 
With Bob Arum as his promoter, expect Inoue to conquer the higher division just like what Manny Pacquiao did in his prime but of course with the help of Bob Arum. Maybe his fight with Butler if pushes through will be his last in the bantamweight division and then move to the 122 lbs limit and see what the future would give to this Japanese superstar.
Seldom we can see a Japanese boxer who dominates like Inoue so i think they will also pay tribute to what he did by imitating his life with an anime hehe.