I've combed through the endless desert in angel form and the dragon key unlocked, but I still couldn't find the ryu TF :-/
Ryu tf is a bit more difficult to get.
If you managed to unlock the dragon sanctuary you are almost there.
You need one more item, a golden artefact. That can be found around the abandound lab but requieres a certain tf to reach the spot.
Hooe this helps, if not, feel free ro ask more!
