Oh, S rank isn't very hard to get if you do the H&C quest. What I was talking about is the rank that's in the upper right when looking at the card menu. And no, it's not that it's hard so much as it is a lot of work, and most of all, a lot of keeping track of what arrow combinations you already have, unless you want to have to look through all your cards every time you get a new one to check for duplicates. xD I'm not sure why I do that.