Ever since their parents died a few years ago, Ryo and his sister Akane have been living alone together. Despite their difficult situation, they are still living reasonably happy and normal lives. However, everything is about to be flipped upside-down due to a secret government project. Due to increasingly low birth rates in Japan, the Japanese government is testing a program in which two young people are forced to marry. Ryo wants no part of it, but he is given little choice in the matter; his new fiancée, Shizuka, comes to his home late one night with several dozen government issued bodyguards, who are there to ensure the success of the new couple. Unlike Ryo, Shizuka couldn’t be more willing to go along with this new program, and eagerly goes about her wifely duties, despite his objections. With meddling friends, pushy bodyguards, and an overenthusiastic new fiancée, Ryo’s life has taken a turn in a direction the young man certainly didn’t expect. (Source: ANN)

Nicholas Brown and Worick Arcangelo, known in the city of Ergastalum as the "Handymen," are mercenaries for hire who take on jobs no one else can handle. Contracted by powerful mob syndicates and police alike, the Handymen have to be ready and willing for anything. After completing the order of killing a local pimp, the Handymen add Alex Benedetto—a prostitute also designated for elimination—to their ranks to protect her from forces that want her gone from the decrepit hellhole of a city she has come to call home. However, this criminal’s paradise is undergoing a profound period of change that threatens to corrode the delicate balance of power. Ergastalum was once a safe haven for "Twilights," super-human beings born as the result of a special drug but are now being hunted down by a fierce underground organization. This new threat is rising up to challenge everything the city stands for, and the Handymen will not be able to avoid this coming war. [Written by MAL Rewrite]

Thought your life was bad? Sometimes, death is worse. There is no salvation, peace, nor god waiting to receive you into their care. But wait, a god? Maybe you are talking about that big black ball stuck in the room with you. Now you are thrown into a game, fighting green aliens and robot monsters for the chance to survive. When Kei Kurono is killed, he thus finds himself caught in such a game—a test of his skills, morals, and will to survive. His life is not his own; his death is spat and trampled upon over and over again. What happens if he does not listen? God knows. A word of warning: Gantz is not for the faint-hearted, but neither is it as simple as it looks. Gore, rape, and violence is rampant, as are portrayals of greed, violence, and all the ugliness that one sees in society today. [Written by MAL Rewrite]

Kurono Kei and his ex-elementary school classmate, Kato Masaru have survived the first two ordeals that the unknown black sphere Gantz has sent them through. Exploding body parts, struggling to stay alive till the last seconds and seeing your fellow comrades fall in a pile of blood and gore are norm to them now. They are aware now that Gantz can call them up along with any new deeds, at any time for another confrontation with aliens. Will Kato's experiences in the Gantz world give him the same courage in the real world? With fellow veteran Gantzer Kei Kishimoto currently staying at Kurono's home as his "adopted pet", can Kurono stave off his growing lust for her mammaries? What the heck is Gantz? (Source: anime-source.com)