Final Quest

Just when you feel that your air is running out, you find the correct slot on the dragon's head, and manage to slide the scale into it.
Instantly, the dragon stirs, and then rises to the surface of the water, bringing you up with him. Thankfully, you breathe deeply of the air, feeling Torai drag you from the dragon and wrap his cloak around you in an attempt to dry you off, at least a little.
"Torai, what are you doing here?" the blue dragon asks.
"We're here to get the stone," Torai answers. "And also to defeat the guardian of this castle."
The blue dragon nods, and then turns to you. "I owe you a great debt for saving my life, human. Rest assured that I *will* find a way to repay you." And, with those words, the dragon disappears.
Finally, you are able to stop shivering, and you slip back into your shoes and put your sword and other weapons away.
You have saved one dragon. Make a note of it.