Chinese girl and comic-relief character with a lot of part-time jobs. Yunyun is a Borner whose power is having two appendices.
Yunyun was gifted with the most absolute useless ability; having two appendixes. When we first meet her in the series she is working as a waitress in a small restaurant where Minoru and Maria and dinning. She barges into the room with two meat buns tucked into her shirt so her breasts would seem larger. The head chef came and yanked them out of her shirt.
A little while after that a car smashes into the building where some serious action starts up.
Yunyun lives on her on a makeshift boat out on the pier where she catches fish for breakfast lunch and dinner.
She has no real importance to the series, other than providing comic relief and showing up on the most random and strangest of places. However, Yunyun works for Liang Qi and Alphard and is given orders to kill Canaan by getting close to her. When she attempts to kill her though, it all backfires so she tries to use Maria as bait and strapped herself in tu-tu of bombs.
Canaan comes to save her but being Maria, she tells Canaan to save Yunyun even though she wants out of her miserable existence. She is saved by our protagonist and ends up joining their team.