A bittersweet story about an old man and his young friend

In a post nuclear holocaust world,it has become a truly sinister dog-eat-dog world where only the strong survive. few humans are left and are easy pickings for mutated creatures but now here comes the mutated humans...

Somewhere in Tokyo, there is a room. In that room is a black sphere. Periodically, people who should otherwise have died are transferred to the room. There, the sphere gives them special suits and weapons and sends them out on a mission to kill aliens here on Earth. While these missions take place, the rest of the world is largely oblivious to them. These missions are lethal and few participants survive them. The sphere calls the shots and it's not the slightest bit nice. Its name: Gantz.

True Calendar (T.C.) 71 - A new age where 70% of the human population lives in space thanks to the development of "Dyson Sphere", a city in space.The world is divided into two main powers: The Dorssia Military Pact Federation, a power which grew out of a military alliance, and the Atlantic Rim United States (ARUS), which grew in power as it expanded its trade agreements. The minor nation of JIOR has declared neutrality between these two forces and maintains its peace through economic prosperity.Within the JIOR's Sphere, Haruto Tokishima lived an ordinary life as a high school student in the division known as "Module 77"—until the Dorssian military begins their sudden invasion!But the whole world will be shaken when Haruto meets the mysterious humanoid weapon, Valvrave!Spin-offs:> Kakumeiki Valvrave - Ryuusei no Valkyrie ( http://mangapark.com/search?q=kakumeiki-valvrave-ryuusei-no-valkyrie )> Kakumeiki Valvrave Anthology Comic( http://mangapark.com/search?q=kakumeiki-valvrave-anthology-comic )> Kakumei Club Valvra-Bu ( http://mangapark.com/search?q=kakumei-club-valvra-bu )

A side-story centered on the school idol Saki Rukino, and tells her story from both past and present points of view.

From Shoujo Sense: Story 4: Ashes to Ashes by Natsunishi Nana Story 6: Someday by Sakurai Ato

From Casanova:

After being kidnapped by an "alien woman", Yuuta developed a severe case of gynophobia. Having to be in charge of a bath house, Yuuta couldn't be more inconvienced by this. Just when he was thinking of trying to cure his phobia no matter what, a beautiful girl called Uni suddenly appears in front of him, and that's not all, that girl says she's the daughter of the alien woman who kidnapped and that her mother won an award by investigating him. Her mother feels truly grateful for this so she sent Uni to repay Yuuta with anything he desires and told her not to come back before she does it. What will happen after Yuuta asks her to cure his phobia in the least painful way possible?

In a not too distant future, the world is confronted with a host of issues: pollution, resource depletion, population expansion, and so on. In response, the Japanese government developed sensory simulation capsules (“beds”) and successfully launched a virtual reality program — “Gaia.” Interestingly, the designers omitted the concept of pain from the program, and as a result, there are no such things as pain or death in this new virtual world.

On a day that started as any other, Oono Yuuri stumbles across a mysterious card, which sets off a chain of strange events that evolve into a tale of conflicting dreams, unlikely friendships, and reluctant vengeance.

From MangaHelpers:
A terrorist group has declared independence on the South Pole, and they have placed extremely powerful nitrogen bombs off many coasts. They plan to take revenge on the world, by forcing them to live briefly in fear and then die. The US tragically failed to defuse the bombs. There are three of them off the coast of Japan, set to explode in 10 days. Luckily, the Japanese bomb disposal team has a powerful resource.
That resource is a little genius girl, Machida Machiko. She's looked after by Aranagi Nagito, a trainee bomb defuser. She's made a pact with him, and with the leader of the bomb disposal program, to clear out the bombs and clean up the world. After certain events in their first defusing operation, though, it looks like all they'll have left to use is a defusing program written by Machiko. Will they be able to save Japan and stop the powerful terrorists?

Cutie Honey for the 21st Century.
Seiko Hayami a private detective and her partner Hisashi Hanyu, are tasked with solving the cases that the police can’t handle. What they soon uncover is a seedy underbelly of crime perpetrated by an organization that can turn humans into monsters.
With Seiko being overwhelmed by these outrageous cases will a hero arise to help in her stead?
A warrior of love only heard from stories long ago.

Many years ago, an ancient civilization once ruled Earth. They were known for advanced artifacts and machines, but were destroyed in the end due to the misuse of their creations. Creating indestructible message plates written in Hebrew, these people left messages for later generations, informing them that if they could not find a good use for their creations, they should be destroyed.

Various entities such as paramilitaries, national armies and armed private forces began to secretly search for these "mysterious" artifacts in order to be used for their own good and against their enemies after the end of the Cold War. Only the ARCAM Corporation can stop these forces from destroying themselves with these "advanced" machines. With the help of its military arm, the ARCAM Private Army and their elite secret agents known as Spriggans (or Strikers), ARCAM plans to turn the tides of battle against those who would threaten the safety of humanity by using the dangerous artifacts.

A collection of illustrations and short stories set in various dystopian futures. They are fairly disjointed and difficult to follow.

1-2. BEAUTIFUL WORLD
3. one self
4. Hane
5. Shabon
6-7. Necroman
8. Toshima-ku Seibu Sensen -West Side Street-
9. S -song of sapphire star-

From AnimeWaves:
Touko's life seemed so ordinary, until she got that call... At the scene of the accident, by the puddle of blood, a young maid appeared... could no one else see her? And then, around the corner, a cry for help from a silver-haired boy... The veils are being lifted and the truth is being revealed!

From September Scanlations:

Misono Kazuki is a college student pursuing a dream of becoming a famous novelist but unfortunately, for someone trying to pen a supernatural YA novel, he's got next to no experience with close encounters of the spiritual kind. To remedy this, at the suggestion of a friend, he heads to a supposedly haunted shrine late one moonlit evening, and while he doesn't find any ghosts, he does find something much more interesting.

It's been 6 months since the L5 Campaign, the conflict that pitted humanity vs aliens with the whole earth sphere at stake; even thought at that time humanity joined forces as a whole and fought valiantly for it's survival, now that the true threat is gone the remains from old conflicts that have kept discord among people from even before the aliens arrived have started to resurface and thus the fight is far from over....

The ATX Team, one of teams that probed pivotal in the L5 Campaign have been "living their usual" being at the mercy of the chain of command and taking part in cleaning up the remainders from the DC war---- but little do they know that again some extraordinary events are brewing up; with the arrival of a strange lady named Lamia Loveless, who seeks help from the team and seems to know more about them than what she should, the path has been set, headed towards a chain of events that might bring forth an even greater conflict that the one from 6 months ago.... Can Kyosuke Nanbu and his team break through all of the opposing forces, yet again?

Reiko finds a starving mysterious animal that looks like a cat with wings. To the girl's surprise this cute animal names itself a space salesman that would sell advanced technology to humans for just a bit of hahise, which is abundant on Earth. But what is hahise? Would you pay it for a machine that can copy anything?

Unfinished space science-fiction manga by Otomo Katsuhiro.

In the year 2022, Kazamidori Aki works at the Time Travel Research Facility with her assistant Miyama. They use a technology called Aston that has scanned every detail of the city for the past twenty years and recreates the past exactly as it appeared into a client’s mind. This process called the In-Brain time travel allows the user to visit his past. But because it is only in their mind, they are unable to change anything in the present so no time paradoxes occur. Aki uses her services to help those who made mistakes in their past and help them change their ways. There is something odd about Aki’s past that makes her very unique and she has to deal with the skeletons in her closet.

A series of short stories that take place throughout the Universal Century Era.

The Arume, a dominating alien race of female humanoids (alien lesbians) has conquered Earth. With total control over the world they have begun live experiments on humans.
One day, out of the blue, a girl that Shouta Yanami has never seen before in his life arrived at his house asking to have sex with him. How will this end for Shouta Yanami?