91 Days is a tV series anime that premiered in summer 2016, produced by Shuka.

About the production: the story comes from an original script, there are 12 episodes of about 24 minutes and its current status is "finished".

Its main genres are action, drama and psychological, with themes such as Mafia, Revenge, Crime and Male Protagonist.

On AniList, 91 Days has an average score of 76%, a very good score, and appears on 201,269 users' lists.

The "classic mafia drama" takes place during the prohibition era. In the Lawless district the law has no power, the mafia rule the streets, and the illegally made liquor flows freely. At one time Avilio lived in this district, but after a mafia dispute ended in the murder of his family, he went into hiding. Later, Avilio receives a letter from a mysterious person that ignites his passion for revenge and leads him to return to Lawless. There, he infiltrates the Vanetti family and gets close to Nero. (Source: Anime News Network)

Official synopsis from AniList.