Rygart Arrow is the only one in his world who lacks the inherent ability to power up quartz, the energy source that makes all of the machines run. Nevertheless, he's pretty well connected. The King and Queen of his country of Krisna happen to be old college friends. But so is Zess, the guy who is leading the army of a neighboring kingdom in an attack on Krisna.
How did it comes to this? There's little time to ponder the implications as an army in giant, mechanized battle suits attacks. Arrow just feels like he's in the way - until he comes across a powerful, ancient mech that no one has yet to be able to figure out how to run. But his natural affinity for the suit's operating mechanism may just turn Arrow into the most important player of all.

Picking up directly after the events of 20th Century Boys, it seems like the world is finally out of danger, but the mystery of "Friend" still exists. As the world is threatened again, Kenji must search his memories for any clue about "Friend."

Note: 20th Century Boys and 21st Century Boys' combined storyline won the Grand Prize at the 37th Japan Cartoonist Awards on May 9, 2008.

Doraemon, a cat shaped robot which came from the 22nd century in the future, goes back in time in order to help Nobita, a below average lazy kid, to make his life less miserable and improve his descendent's life. With many of Doreamon's gadgets from the future, Nobita's life will never be the same.

Note: It was awarded the first Shogakukan Manga Award for children's manga in 1982 and also won the Tezuka Osamu Cultural Grand Prize in 1997.

In the year 2040, Japan has advanced technologically to the point of no longer needing people to work. However the cure for some diseases, such as multiple sclerosis, has not been discovered?people who have this disease have to stay cryogenized for 5 years to receive the cure. What was not expected when they woke up, was that they are the only hope for humanity to survive.

World's End Harem After World is the continuation of the story and not a sequel or different series to this, since it didn't end (as you can see with the volume release being 13 and not 1).

A slice-of-life comedy about an ultimate weapon in the shape of a cute little girl named "Alma", and the two scientists who created her! These two scientific geniuses are constantly being befuddled by Alma's incisive questions and analysis of their relationship!

Based on the TV Series of the same name, insects all over the world begin to swarm for unknown reasons, with other animals and plants acting strange as well. To investigate this, Takuya Kai is dispatched with an Earth Academia group. Investigating independently, Takuya finds Guru who reveals that insects are preparing for battle against invaders from another dimension. Offering their aid, the Earth Academia create suits of armor to combat the threat as the Jamahl arrive to Earth to enslave humans. Though they have trouble perfecting the Bio-Machinery, Guru arrives to infuse the armor with the life force of many insects. Once the suits become the B-Commanders, one suit chooses Takuya while the other two bond to Daisaku Katagiri and Rei Hayama. With their newfound power, the B-Fighters fight to drive back Jamahl's forces. (Wikipedia)

This series is the reboot to the original Weekly Shonen Jump series Juuki Ningen Jumbor (Jumbor Barutronica). This manga takes place in an alternate universe from the original story, but features many of the same characters.

Baru Craw died during the start of Genber's World Construction Project. However, he wakes up 10 years later as a jumbor.

MIKAMI Hiromasa is the story writer for the series. His name can also be credited as MIUE Yuma.

The second year has started! Mikihiko has been promoted to Course 1, Tatsuya has entered the new Magical Engineering Course, and trouble is brewing between Saegusa Mayumi's younger twin sisters and 1st year representative Shippou Takuma, a member of the 18 Assistant House's Shippou Household.

(Adaption of Light Novel v12)

In the distant future, a new immortal and genderless life form called Gems populate the Earth. The 28 Gems must fight against the Moon Dwellers, who attack them regularly to abduct them and to turn them into decorations. Each Gem is assigned a role, such as a fighter or a medic.

Being only 300 years old, Phosphophyllite is the youngest of the Gems and has no assignment yet. Phos to help to fight the Moon Dwellers, but is too weak and brittle for battle. One day the master of Gems, Adamantine, assigns Phos the task of creating a natural history encyclopedia.

Nominated for the 8th Manga Taisho in 2015.

Did you know there was an organization that is protecting the world from the harm? Its name is Ratatoskr.

Their job is to assist "Spirits", an unknown beings that causes destruction to wherever they go, whether they intend to or not. And they help those "spirits" adjust into normal life.

This is a story of a boy, Itsuka Shidoh, and his daily life, where he was forced into attempts into leading the spirits into his regular ordinary way of life and where they lead... his?

Zero was mankind’s first real superhero. Under his watch, countless other superheros appeared and followed in his footsteps. However, after 5 years of war, Zero disappeared without a trace.

Jiang Chen crossed into the judgment day after the nuclear war, and there was a mess everywhere. In order to survive, Jiang Chen led the refugees to establish a base area and set up a federation. Then carry the judgment day's technology and return to the true world. Change the political structure of the earth, rescue the world in a critical moment, and establish the Great Union of Earth Federation! Expanding the territory and fighting the threat from the sky.

After a nuclear war turns most of the Earth into desert wastelands, surviving humans had used the sands in order to survive. One of them is a professional mercenary named Sunabozu, who makes a living by hiring himself out to anyone who needs his talents.

I was awakened at an interchange on a certain highway. ? Unconsciousness accelerates! An original comic version newly created for comics by the original anime staff called Otaro Maijo and Yuuki Kodama!

They were childhood friends, and she had always been more powerful than him. But when they accidentally traveled (summoned?) to another world, it was finally time for him to become the knight in shining armor! He had to find her first though, since they were separated... Come and witness his fight to be better in a crazy world where monsters roamed and technology was so advanced your amputated limbs be restored to perfection...

The girl I fell in love with is… an alien!? I, the class president, happened to fall in love with my classmate, the eccentric Haru. I confessed my feelings, but her true identity was an extraterrestrial who came to Earth to survey it. “I still like you!” I started going out with Haru, but I have a further “secret” to keep…

From MangaHelpers:
This manga is related to the "Date A Live" novel and anime. It features members of the AST (AntiSpirit Team), a special squad devoted to fighting spirits. Okamine Mikie idolizes her superior AST member, Tobiichi Origami, and may be in love with her as well. Unfortunately, Origami seems to want nothing to do with her. One day, they end up heading toward an explosion that wasn't caused by a spirit. Instead, it was caused by a girl named Ashley Sinclair, who transfers to their school shortly after the incident!

The future cannot be changed! In 2019, former track and field club member Maki Makino meets a mysterious man with sunglasses on her way to school who saves her life. That encounter connects her to her past and future... Presented with overwhelming power, a 'boy meets girl' story opens here with unpredictable results!

Spin-off Comic from "The World of Otome Games is Tough for Mobs" Starts! A kindergartener mob life comedy! Even when they're tiny, they're still female chauvinists!

20 years ago, Weve Aliens arrived at Earth to search for marriage partners. Weve are perverted and love interbreeding. With their advanced technology, they have solved all the Earth's problems to do with the environment, food, and resources.

Gen is a student at the prestigious Human-Weve school Shinryou Academy. Due to his late grandfather's words, he loathes Weve and believes that pure humans will eventually die out if something isn't done about Weves soon. However, Gen meets the Weve girl Mirika, who falls in love with him.