Im Korean user. I think no one doesnt know about ending with Aulin in this forum. So I will explain about ending with Aulin. In my case, at the first choice in the cave, I choose Aulin. Then I denied all of Fraiya's proposes. The most important thing is dueling with Fraiya. You must select defend to all of characters. Then fighting will finish in 3 or 4 turns. Thats it. If you clear the final boss so you are able to see ending with Aulin. Good luck.