It's so cute that I can't help but scratch my heart.
To put it simply, they are Xingzhao fandoms with FZ background. They should have no CP but may include Liu Qingying, Ye Xiaoyang, Yunfeng Crow, and Fan Bing.
The original joke came from Yinyin, this article is for her =3333=lick~~
Updates may vary.
Disclaimer: All characters belong to Butterfly Blue, I own nothing.