A group of high-school students had an accident on their way to a trip and died but they find themselves in a classroom with a black sphere.Related Story:Gantz

Inuyashiki has a family, a wife and two kids, none of which care about him. When he learns that he has only three months to live he realizes that the only one who will miss him is his dog. Shortly after this realization he is killed in a crash landing by aliens. He is rebuilt by them as a machine with a human exterior. How will his life change now that he isn't human.

Koizumi, Shintarou is 30 years old, a virgin, and has isolated himself in his room for 15 years. He has become a burden on his father, Koizumi Yasujirou. one day, Shintarou makes a proposition that if Yasujirou gets a girlfriend, Shintarou will come out of his room. It turns out that Yasujirou has already made a girlfriend, a young beautiful woman, Yoshinaga Haruka, who is with Yasujirou for her own personal reasons.Yasujirou and Haruka decide to get married, but Yasujirou dies on their honeymoon. Now Haruka decides to take care of Shintarou, and so this weird "mother and son" are now living together.

A couple of high school pupils, Masaru Kato and Kei Kurono, are hit with a subway train in a effort to save the life span of a drunk homeless guy who'd fallen onto the tracks. Following their deaths, Kato and Kurono find themselves transported to the inside of an unfurnished Tokyo flat, where they meet with a Gantz expert Joichiro Nishi, as well as other clueless players. The pair soon understands that they're prohibited to depart the flat. At one end of the room there's a sizable black sphere called "Gantz".After some time in the area, the Gantz world opens up, showing wires attached to his head and a hairless nude guy using a breathing mask, and different weapons to allow them to use. Included in these are the custom fitting black suits which give them superhuman speed, strength, stamina and damage resistance, a control which functions as a stealth and radar unit, Xgun, X Shotgun, Y-Firearm. Later on the show the Gantz sword, Gantz Bike are manufactured much more powerful at the same time as accessible weapons are given in the 100 point menu. Brief info and a picture is revealed of a few of the Gantz' objectives; Gantz orders them to go and kill them. Except for one assignment, every one of the goals are aliens living on Earth, which take on a wide selection of types. During the mission, individuals that are ordinary cannot view the extraterrestrial beings or the players. Them transport to the part of the assignment, and they can't return or leave until all of the enemies are killed, or the time limit has run out. Each person is given points for the aliens they've killed, when they survive an effective mission. The menu offers three choices:  The participant can go back to their regular life, never having to be summoned by Gantz again. As a cost, their memories of the assignments as well as Gantz will be erased. The participant gets a unique and incredibly-powerful weapon. The participant can restore a person that has died during a mission from Gantz' recollection.Points are tallied up following an assignment was finished, do and the players are permitted to leave as they see fit until their next mission, together with the exception of talking about Gantz which would lead with their heads bursting. During the third mission of Kato and Kurono, every one of the participants including Kato are killed, however the last leader giving a chance to live to Kurono is killed by Kato. Kurono survives the third mission bleeding on the ground along with his limbs cut. Following the next assignment inside embracing a hero, leader complex similar to Kato Kurono begins to transform. Kurono participates together with the goal of restoring his dead friends using the 100 point compensation choice as the show continues. A fresh team of Gantz players is gathered, which Kurono leads, as among the greatest combatants plus the most seasoned veteran. Through his interactions with all the other members of his life or death conflicts and the team, Kurono slowly develops into a leader that is responsible. Following the Oni assignment Kurono revives Kato, and shortly after Kurono meets his death from the vampires. As the show continues, the rules of the assignments change; regular folks can now see them, the aliens they face are increasingly more strong and dangerous, plus they participate in a mission with another Gantz team from Osaka. Kato becomes the center of his search to restore Kurono and attention in the manga. By the end of the assignment, Kato that is just like the initial time expired, he gets the better of arguably the most powerful alien in the show and is set bleeding on the ground going to expire. After several assignments, an old player named Nishi, who understands more in relation to the others about how Gantz works, reveals them a "catastrophe countdown" on the Gantz world that the other players were unaware of. By the end of the week, the Earth is invaded by a huge alien force and starts exterminating the human race, while their utmost tries to use Gantz' innovative technology and weapons in defense. It's suggested that Nishi expired, but his departure seems to not be clear. In his area Eeva totally controls all Gantz teams prior to the statement by killing most of the hunters, giving an expression of the mortality to the human race. Kurono that will be air to the whole world is called on by the world, and having the help of a revived Kato, Kurono gambles all his potential for winning and saving the human race on himself. Kurono manages to overcome the alien mothership stops from destroying Earth. The collection finishes with Kato and Kurono being greeted as heroes and returning safely to Earth.Other manga:

Short stories showing some of Oku Hiroya's inspirations before he created his famous masterpiece, Gantz. From Baka-Updates: This series tells us stories about the mangaka's (OKU Hiroya) favorite movies and how it helped and lead to the creation of the manga we all came to know & love - Gantz.

The year is 2028, location in New Koshigaya. A young boy, Isurugi Neru, lives in a poor family and is forced to quit school so that he can find his own way in life. Neru on the other hand, only thinks of one thing: to take revenge on Yagami, a classmate, who's especially gifted and has humiliated Neru numerous times.

The manga's story begins when a peasant named Hanbē asks a girl named O-haru for her hand in marriage, but O-haru confesses that she is already thinking of another man named Masakichi from a neighboring village. When Hanbē seeks out Masakichi, he finds that Masakichi possesses a sword and the skills to use it, despite being a peasant.

Chizuru Yoshida is not your typical high schooler and she's all too aware of it! She has a talent with getting what she wants from her male lovers and often comes across as cold and manipulative...In truth, despite her experiences with guys, she has never been in love. That's until the fateful arrival of newly-trasferred student, Azumi Yamada, at her school. It was love at first sight for Chizuru--indeed an unexpected turn of events for the story's vixen!Not only was she in love, but with all things...another girl. Chizuru goes through a brief stage of anger and denial and tries to convince herself that she couldn't possibly be attracted to such a simple-looking, shy, and naive girl! To her despair she finds herself constantly thinking of Azumi, so she finally resolves to become friends with her, but it's not too long when she starts to push things along with Azumi...Despite the title, Hen is NOT Hentai. But it does have sex, strong language, yuri, and other elements that might make you think "Hentai".

Yamada Yoko, a high school boy who has a movie producer father. One day, while out with friends to shoot a film that he plans to enter into a film festival, a poster of Papiko, an adult video actress with big breasts, catches his eye.