Jun You Yun
Japanese title: 君有云
Type: ONA
Episodes: 24
Source: Novel
Genres: Action, Adventure, Fantasy
Studios: Passion Paint Animation
Producers: bilibili
Duration: 19 min per ep
Rating: PG-13 - Teens 13 or older

Four teenagers who left the school and entered the arena for the first time, went through all kinds of difficulties and dangers in order to find the truth, unravel the mystery of their life experience, and become a gentleman. They value the way of a gentleman and demonstrate the chivalrous spirit of "using their own strength to make the world fair". A strange book, a grudge, a belief, a legend.

(Source: bilibili)