This is an adventurous story about friendship and love.

Xiao Ziyun, a lonely tenth grader, accidentally stumbles upon a legend about a white cat that can transform into a girl, and about an invisible "non-material" friend on campus.

In the rainy season, she meets a girl named Bai Xiao, and the story unfolds.

Set in a southern Chinese school, the story captures the atmosphere of companionship, laughter, and a warm daily life.

However, Xiao Ziyun gradually realizes that Bai Xiao has many more secrets to hide...

[Edited from Steam]