a reincarnated soul that has seen Kirin Aiha's growth, she has been teaching him with common sense of the world once and left briefly to earn money for them.
Yuna has earned the title of Guardian for the siblings when they were simply 27 years old, although, from her information, she didn't know they were 27 years old at that time and believed that they were 5.
Yuna used a weapon called a Tonfa with swift and skillful use, although this is the first time that kind of weapon was ever created and was used by her for her lifetime, even improving on the Tonfa for some time.
Yuna as her Title suggest, serves as a guardian for all of the creations and Rin, her fighting isn't something to note of but her talents are what proves to them that she's useful, class items that could be passed as a noble's item and painting and sketches, including singing, her skills was something the whole of Laplace loved for quite some time and was never tired of it
Yuna Died in an assassination from the middle of singing in a cafe that Theia has established, her death was mournful that even the Fallens attended and cried over, her serene and jumpy attitude and active charisma was something everyone missed after her death, Rin in particular.
-what's joy in there when you keep troubling yourself with bad memories? there's always a way to have fun and forget. although I'm no genius, I still have some memories of my past that I would love to forget... but... if those prove that I was once human, those emotions... is something I'll never let go of. it might seem stupid but... it's the joy in life, seeing your loved ones die is something heartbreaking... but you'll need to learn from it, accept it, be who you are so that you can keep moving forward... heh... well... take it from the person who experienced the opposite-
Yuna Aiha