In her previous life, she was unknown because she kept a low profile, and was not noticed at school. She was not known to everyone because she was used as a shield by the school boss. Once she traveled to the world of the Net King, she became Echizen Ryoma's sister. In the new world, he decided to break the original low profile and live out this life in a high profile.
Tezuka Kunimitsu: Xiaoyin, it turns out that you have wanted to see me from the beginning.
Echizen Ryunon: Who said that? I just want to see what the person who made Ryoma regain his passion for tennis looks like.
Atobe Keigo: I am so gorgeous, but you actually dislike me
Ryuune Echizen: Who said that I don't naturally like narcissus?