Mo Xiaoyu has been very fond of Xiaojie in "Hunter" since she was a child, so she specially learned Taekwondo and actively participated in any dangerous activities in the school. When she was in college, she was on an outing mission.
She was pushed off a cliff by her boyfriend and her mistress and traveled to the world of "Hunter" to become Xiaojie's sister, because a boyfriend she only had for her mother was nothing to be resentful about. Originally, it was just to change Xiaojie's life and find a good husband for Xiaojie, but I didn't want to do it because my brother-in-law is too serious...