Baccano!

During the early 1930s in Chicago, the transcontinental train, Flying Pussyfoot, is starting its legendary journey that will leave a trail of blood all over the country. At the same time in New York, the ambitious scientist Szilard and his unwilling aide Ennis, are looking for missing bottles of the immortality elixir. In addition, a war between the mafia groups is getting worse. On board the Advena Avis, in 1711, alchemists are about to learn the price of immortality. Based on the award winning light novels of the same name, this anime adaptation follows several events that initially seem unrelated, both in time and place, but are part of a much bigger story—one of alchemy, survival and immortality. Merging these events together are the kindhearted would-be thieves, Isaac and Miria, connecting various people, all of them with their own hidden ambitions and agendas, and creating lifelong bonds and consequences for everyone involved. (Source: MAL Rewrite)

Gungrave

After a tragic scene with the murder of his friends, Brandon Heat follows his only friend Harry McDowel into Millennion, the largest mafia syndicate. While Harry McDowel is striving for power, Brandon is only staying in Millennion to see the girl he loves whose custody was gained by the leader of Millennion, Big Daddy. But as the years pass and Brandon proves loyal to Millennion, Brandon learns the true purpose and passion of Millennion, and that's when true conflict arises. (Source: Anime News Network)

Jormungand

A ruthless arms dealer on a quixotic quest for world peace. A child soldier born into chaotic conflict. Their lives will intertwine as they journey together through the seedy underbelly of the world's arms market. (Source: FUNimation)

Gunslinger Girl

Officially, the Social Welfare Agency is a government sponsored corporation that's in the business of saving lives. In reality, it's an agency on the fringe of technology. They give terminal patients another shot at life using cybernetic implants. This conditioning process then shapes the patient into an efficient machine for handling all of the government's dirty work. (Source: Funimation)

BANANA FISH

Nature made Ash Lynx beautiful; nurture made him a cold ruthless killer. A runaway brought up as the adopted heir and sex toy of "Papa" Dino Golzine, Ash, now at the rebellious age of seventeen, forsakes the kingdom held out by the devil who raised him. But the hideous secret that drove Ash's older brother mad in Vietnam has suddenly fallen into Papa's insatiably ambitious hands—and it's exactly the wrong time for Eiji Okamura, a pure-hearted young photographer from Japan, to make Ash Lynx's acquaintance... (Source: Viz Media)

Togainu no Chi

After being devastated in the third World War (known as The Third Division), Japan was divided in two. Several years after the end of the war, a crime organization called Vischio has taken control of the destroyed city of Toshima (formerly Tokyo, Japan's capital city), where they are holding a battle game known as "Igura". The main character, a young man named Akira, is falsely accused of a crime. Once arrested, a mysterious woman appears before him, offering him freedom if he agrees to participate in Igura and defeat Igura's strongest man: the king, or "Il-re". The story follows Akira's life in the harsh, lawless Toshima as he fights both to survive and to unravel the mysteries developing around him. (Source: Wikipedia)