Jie Mo Ren
English title: The Devil Ring
Japanese title: 戒魔人
Type: ONA
Episodes: 14
Source: Web manga
Genres: Action, Fantasy, Mystery, Supernatural
Producers: Tencent Animation & Comics, Qiying Animation
Duration: 13 min per ep
Rating: PG-13 - Teens 13 or older

When Freshman Zhou Xiaoan put on a ring of unclear origin, a terrifying devil leaps from his mouth and his life is changed forever. Shocking historical secrets are slowly revealed - a Blood Devil calling itself King Zhou of Shang, a race of heart-eating zombies; a dubious group of Taoist Priests that fight against them; mysterious beings of the supernatural world who can blend in to human society.

(Source: GFearJ)