Well, that was a roller coaster. I didn't get the ending of Superior Day and ended up reading the prequel "Hanged Doll" and it's twisted.

So at the end of Superior Day, waxdoll is in jail and gets a visit from Red kkk, the mastermind behind multiple killings in Hanged Doll. That guy is like a shadow boss driving others (who don't fit in the society) to kill for his own pleasure...crazy...crazy guy. Now, I don't thiink we see waxdoll and redkkk interact any time until the end, but that would have been nice to see how they met.
Now, we need a sequel w/ redkkk as the final boss.