Anime List (Categorized as "Underworld") Sort '; Name (A-Z) Name (Z-A) Last Updated Oldest Updated Most Popular Most Popular (Weekly) Most Popular (Monthly) Least Popular Last Added Early Added Top Rating Lowest Rating N/A Gunslinger Girl In the heart of Italy, the Social Welfare Agency rescues young girls from hospital beds and gives them a second chance at life using the latest in cybernetic advancements. With their artificially enhanced bodies, the girls are brainwashed and trained as assassins to carry out the dirty work of the Italian Government. Despite all the modifications, they are still just children at heart, struggling for recognition from those they love, even knowing the love they feel is manufactured. This tragic tale unfolds as these girls grapple with their emotions in an agency that treats them as nothing but ruthless killers. N/A Gunslinger Girl Il Teatrino When the Social Welfare Agency investigates the disappearance of an operative, their inquiry leads them right into the lair of their rival, the Five Republics. The assassin Triela infiltrates the hostile organization, but her search is cut short when she finds herself staring down the barrel of a gun... N/A Kenran Butou Sai: The Mars Daybreak Mars is now almost entirely covered in water. Humanity exists in large city-ships that float through the open seas. But life is hard for those who live on Mars - the economy is in bad shape, work is scarce, and food is expensive and highly prized. Gram and his friends try to do the best they can, but the work keeps drying up. Some have taken to a life of piracy to combat the corruption in the government; one such group is the pirates of the feared Ship of Aurora. And the Earth government, which rules Mars, has dispatched a new team of military pilots to combat them. In their specialized mecha called Round Bucklers, they must make the seas of Mars safe for humanity. Caught in the wrong place at the wrong time, Gram finds himself on the run with the most notorious pirates on Mars. But here's the thing? - He's starting to like them! N/A Kiba In a dystopian future, two friends dream of freedom... and gain more than they bargain for! Hothead Zed is on the run from the authorities, while his brainy pal Noah struggles with his own battered body. Both find a magical world that seems to offer escape and power undreamed of. Join Zed and his powerful, rebellious spirit Amir Gaul on their search for the ultimate power. It's a force that can save the world - or destroy life as we know it. This is the world of KIBA! Where you must harness the power within and fight with all you got! N/A Phantom Requiem for the Phantom Mafia is rife in America where assassinations are a regular occurrence on the streets. Inferno, a mysterious company, is behind most of these dealings through the use of their near-invincible human weapon, "Phantom." One day, a Japanese tourist accidentally witnesses Phantoms latest murder. Desperate to escape, the tourist hides in a secluded building. However, Phantom, revealed to be a young woman named Ein, and the leader of Inferno Scythe Master captures the tourist and brainwashes him. N/A Zombie Loan Michiru Kita is a special girl who possesses Shinigami Eyes, which allows her to see a dark ring around a person's neck. This ring symbolizes the person's impending death; once they are marked to die, a gray line, which is invisible to normal people, appears on their neck, and once the ring turns completely black, the person dies. Chika Akatsuki and Shito Tachibana, two boys in her class, both have black rings around their necks, but to her surprise, they are not yet dead. It is revealed that after a tragic accident that was supposed to kill them both, the two boys made a deal with a secret loan office called the Zombie-Loan. In return for keeping them alive, the two have to hunt zombies for the loan office. When Michiru gets involved with them, she finds that her life has just become more complicated.