Deadman Wonderland: The Red Knife Wielder is a oVA anime that premiered in fall 2011, produced by Manglobe.

About the production: the story comes from a manga, there is 1 episode of about 27 minutes and its current status is "finished".

Its main genres are action, horror and sci-fi, with themes such as Gore, Police, Orphan and Urban.

On AniList, Deadman Wonderland: The Red Knife Wielder has an average score of 65%, a good score, and appears on 25,797 users' lists.

Two years after the catastrophic tidal wave that swept over Japan, police officer Kiyomasa Senji is trying to make the world a safer place. Using his Branch of Sin powers, he stops criminals in whatever ways he can. After rescuing a boy named Izuru Tsukiyoshi from a gang called Goreless Peace, the conflict between Kiyomasa and his adversaries heats up rapidly, to the point of being explosive. Offering a glimpse into the past of the future Deadman, the story follows Senji, helping to further develop the reasoning that drives his actions later in life. (Source: MAL Rewrite) Note: OVA bundled with the eleventh volume of the Deadman Wonderland manga.

Official synopsis from AniList.