Jiang Jinyang is an excellent employee of the Time Travel Bureau, and his main job is to play vacant roles in various worlds.
Natsume's Book of Friends: Natsume Reiko's sickly young neighbor with powerful spiritual powers.
Tennis King: An autistic boy who had an unfortunate childhood but loves tennis
k: A rebellious young man who is unruly and arrogant and never tells the truth.
Jiang Jinyang: Why are they all men? I'm a girl!
Other worlds to be determined
Purpose: Long live friendship
没错没错三角形最稳定啦