Hua Jianghu: Huan Shi Men Sheng
Japanese title: 画江湖之换世门生
Alternative titles: A Portrait of Jianghu: Reincarnated Disciple, The Gate of Fate, The Degenerate Drawing - Double Life
Type: ONA
Source: Original
Episodes: 20
Status: Finished Airing
Aired: Sep 14, 2017 to Jan 25, 2018
Duration: 24 min per ep
Rating: R - 17+ (violence & profanity)
Studios: Rocen
Genres: Drama, Fantasy, Mystery, Romance
Themes: Martial Arts

Nian Yangxiao, came from a parallel world to save his true love who was killed in another dimension. He must find the killer who has a mark on her thigh before it was too late. If his love is killed in this world she will truly be gone forever. He has to deal with the various gangs with the help of a newly acquired power which can stop time.

(Source: CrimsonSubs)