Thread:PedroJJBA/@comment-23820055-20130927162122/@comment-5919632-20130930030651

After so many time without playing it (and now you not obtaining it) i'm not so sure anymore...

Ok, I tried to look at some japanese websites (the game is in japanese, so people who can speak the same language must know more than me) and every one of them says the same thing: "Rank S in Chapter 22", but don't go into detail about if its only the rank or everything S.

About the modes, some sites say it can only be achieved in story mode with Jonathan, while others say it can also be unlocked in chapter mode with anyone (one even recommends Tonpetty, as his hamon increases faster than the others). I guess you already tried on Chapter Mode, so the only thing left is doing chapter 22 with Rank S in Story Mode.

This is starting to become weird to me. I will try to play the game on a emulator and do it myself to see if i'm missing something. Sorry if I still couldn't help you.