Only one slight and not really important problem...
I don't really know any Japanese fairy-tales. Do you think they will accept something that is based on Western stories but with Japanese characters? Who knows (fingers crossed).
Encouraging everyone to give it a go, even if you don't submit, just see what you come up with. Let your imagination go crazy. And watch this space, I will post my contribution up (or at least part of it) after the deadline.