Likewise, I first guessed 'Lee' (and not Rock Lee, since they call him 'Lee' in the game). Then I was told by others that one hint mentioned the mystery ninja was a Hidden Sand Village Ninja, so I used my 2nd guess on Shira. I received 58 fragments, which is okay, but I deserve the fragments received when guessing correctly.

I'm pretty sure I'll recruit him, but getting him on the path to 4 stars will be more annoying now.