Yeun is quite a beautiful creature. She is a Spirit Guide, able to move between the planes of Now and the Afterworld to help the wandering souls find their way. While during the day she assumes the form of a human being to protect her vulnerable powers, when the sun settles she shifts into her True Self.
She radiates a calmness that eases even the most troubled minds, and being as gentle at heart as she is, Yeun will never harm another living being.
In her human form she is able to see the spirits and can communicate with them, though she is weak and drifting between two worlds.