Is Zuori Qing Kong hentai?
English title: Crystal Sky of Yesterday
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

Movie · 2018 · 1 episodes · PG-13 - Teens 13 or older
Drama, Romance, School
In the late 90's, in China, Tu Xiaoyi, an high school student, takes no interest in marks and prefers to play video games with his friend nicknamed "Peanut." One day, he was chosen by his teacher to become the class representative with Yao Zhetian, a very cute girl. He will experience his first love and disappointments.
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