Board Thread:Questions and Answers/@comment-27609365-20160620202058/@comment-33658145-20160621040113

I'm guessing it's based on your all-time ranking based on the ranking of the four episodes. For example, if I got Legend I in Ep.2 and King V in every other episode, I would get a Legend I-based Treasure.

The Treasure... yeah it's something like those certificate treasures.