Wu Shan Wu Xing (2020)
English title: Fog Hill of Five Elements
Japanese title: 雾山五行
Type: ONA
Episodes: 3
Source: Original
Genres: Action, Fantasy
Studios: Samsara Animation Studio
Producers: bilibili, Nice Boat Animation
Duration: 26 min per ep
Rating: R - 17+ (violence & profanity)

A legend tells that a long time ago, monsters could give the ability to certain elected officials to master the five elements. But for that, you have to go through the dangerous foggy mountains...

We follow the adventures of one of these elected officials.

(Source: Nautiljon)