https://www.youtube.com/watch?v=zlkIUmn5USg&feature=youtu.be&t=37m48s
There's said to be a species of an ancient life that roam various holy grounds peacefully with an unbelievable power of sight, able to see things the human eye cannot. Things like goals, one destiny, where one should go, and even where one can find their lost item/companion.
However... no one thought to ever catch one, let alone ride one.

Oct 6
Aysel had only read story tales of monsters when she was younger, but soon found out quickly the story tales were merely documentaries forewarning those who encounter great beasts in great lands. It wasn't her type of thing, until she found out why her and her younger brother were separated from their parents many years ago. She came to find out, that every decade a dark being is revived by collecting 4 great powers to cause a genocide upon their lands. The children of her generation were spared.
By looking through the center of the monster's head, she's able to see what she needs to. And with this ability, she's seeking those 4 great powers. Chiastolite... Blood Stone... etc