A young man awakens in an abandoned warehouse with no memory of his past. As he leaves the room and ventures further into the warehouse he is attacked by a girl in a mask; she tells him that in order to live he must come at her with all his might. After a fight for his life, he manages to overpower the girl, learning that he is to be trained as a Phantom - an assassin for the Inferno organization. He is also given a new name: Zwei. For three months, Zwei is trained by the girl in the arts of assassination until he has just one final test: to kill a living human being.
Middle school student Ganta Igarashi witnessed the slaughter of his entire class by the mysterious 'Red Man', and as the only survivor, he was labeled a mass murderer and sentenced to death. Now an inmate at the privately-owned prison and ‘amusement park' known as Deadman Wonderland, Ganta must try to survive in a place where inmates are the main attraction in brutal gladiator-style games. At the same time, he must attempt to uncover the truth behind the ‘Red Man', his mysterious childhood friend Shiro, and why he was the only survivor that bloody day.
Without focusing on gore, sex or supernatural horror, these both Phantom ~Requiem for the Phantom~ and Deadman Wonderland put an average human being into an unspeakable world of darkness where only their inner will to survive prevails.
For Kouta and Yuka, finding the bloody naked young girl on the beach would change their lives forever, for better or for worse. Unable to speak or function as a normal human being, she is named Nyu by the duo, and taken into their home in an effort to save her. But what neither teenager knows is that this innocent young girl is actually a killing machine -- an experiment gone terribly wrong -- and it is only a matter of time before the murderer in her awakens again...
I enjoyed both shows a huge amount. They may not have very similar plot lines, but they both are very emotional and well thought out and developed stories. If you liked one, there is a very good change you will like the other.
When their investigation into the disappearance of an operative leads them directly to The Five Republics, the Social Welfare Agency sends mechanically-enhanced cyborg Triela to infiltrate the organization. However, she meets her match in the form of Pinocchio, one of Padania's assassins whose skills with a knife are exceptional. Meanwhile, after a long period of hospitalization, Angelica has recovered enough physically to return to the field. But due to the side effects of her conditioning and her addiction to the medicine prescribed to her, is she mentally ready?
Both shows have the main character being a girl who is an assassin and a guy character who assists them. The girls are controled by other in both shows. In gun slinger girl the girls work for the government while in Phantom they work for a criminal organization.
Both Animes play smart game ( when it comes to killing). Johan looks just like a characters out of Phantom in both appearance and personality.Very similar animation and very similar color scale (grey).I recommend this one.
In a city where rapists and murderers prey on the innocent, the young Monaka Noguchi lives a double life; a clumsy high school student and waitress by day, she transforms into the skilled assassin Angel of Death at night. Her father is an astronaut and has always been out of reach, so Monaka must balance her studies and job, as well as support herself, while also hunting down those who deserve to die. With a cool and calm demeanor, even in the face of bloodshed, it seems that nothing can sway Monaka’s resolve; however, her newest job will prove to be most difficult, and hit a little too close to home...