How many heroines are there in Astral Guardian?

Astral Guardian is an urban science fiction novel written by Ye Jing Keith, a contracted author of Ali literature. There is only one hostess, Liu Qingyao, a senior at Jiangzhou University, and Princess Yan Botuan.

The Guardian of Astral World tells the story that students from the School of Software Engineering of Jiangzhou University grew up in a trial space and an adventure world, and how Xiaohe auxiliary system protects their loved ones and the starry sky.