Baccano!

Baccano! (which translates to "ruckus" or "stupid commotion") focuses on the stories of different characters in the Prohibition Era of America. Originating back to 1711, a group of alchemists seeking eternal youth are given a special potion by a mysterious demon, making them immortal. However, alchemists began disappearing, and realizing the danger of being close to one another they scatter around...