From Kodansha Comics:
In the gritty, futuristic city of Neo-Saitama, the streets run slick with acid rain and blood. Here, an army of cybernetics-clad ninjas runs amok under the menacing rule of the Soukai Syndicate. As incessant strife wrought by a ninja turf war takes the lives of all citizens who end up in the crossfire, one can only hope to end the day without getting a suriken to the skull. But in these dark, tragic times, a spirit of vengeance rises to kill all wicked Ninja who terrorize Neo-Saitama. This crimson avenger is Ninja Slayer, and he will not rest until all Ninja have been slaughtered at his hands.

A young girl is mistaken for an alien princess and kidnapped... however there is more to her then meets the eye.

Gisele is a happy-go-lucky princess of an empire covered in snow, renowned for its production of androids. To make her smile more often and avoid all the boring princess responsibilities, Nero builds an android identical to her to act as her double. But when her power-hungry and warmongering father decides to marry her off to a prince of another warring country and use her android double as leverage, what will happen to these two and their country?!

(Source: Batoto)

A tale about people who have to shoulder the burden of mankind’s progress…

What can you do when you get mistaken for murder? Nothing. You go to prison. Lucky for you, your inmates are some of the biggest cutthroats in the prison. Seriously, you are lucky. Especially when zombies attack.

Neo Universe was an online game that was very popular in the story. Ganda participated the game, hoping to become a GM like his brother Vissana. Unfortunately, Ganda was tricked by an Anti-GM member named Waipoj, and Ganda accidentally became one of the Anti-GM members.

Rito is a high-school boy who just can't confess to the girl of his dreams, Haruna-chan. One day when coming home and sulking in the bath-tub, a mysterious and barely clothed girl appears out of nowhere. Her name is Lala and she comes from another planet...

In a world ruled by anthropomorphic animals. Humans live as slaves, and a group of terrorists dubbed the "World Destruction Committee" intends to destroy the world in rebellion.

A young man, Kyrie, who possesses the power to destroy the world, though he does not know why. Morte, a young woman with a tragic past and is the leader of a terrorist organization plotting to destroy the world. A demi-human named Naja, Morte's childhood friend Agan, a tough bear named Toppy, and a dragon girl named Lia. These beings will come together and journey to destroy the world!

Short yuri manga, set in a near-futuristic mecha pilot training school.

From L.O.V.E.:

Through the activity of “Elfenbein” – an anti-government organization that Fon, Jacques and their other classmates established – Fon, now a 3rd year student in Ilegenes Military Academy, became a threat for those important people in the government with connections to the black market. Meanwhile, two female military cadets entered the academy – something unusual in the all-male environment of the academy. One of them, Gabrielle, is surrounded by mysterious movements of unrest… The long-awaited new series of Ilegenes finally begins!!

And epic sci-fi story heavily influenced by the Epic of Gilgamesh, as several groups fight for a mysterious power. While a close brother and sister get tied up into the battle unwillingly.

From Viz:
When goofy inventor Senbei Norimaki creates a precocious robot named Arale, his masterpiece turns out to be more than he bargained for!

This series helped launch Toriyama's career and was awarded the Shogakukan Manga Award for shounen and shoujo manga in 1982.

Year 20xx. In a high-tech future, where people are divided into categories according to their birthstone, there are two important things: Box, the immense virtual reality that manages the data of the world population, and Logiste, a fierce dance competition, sometimes even dangerous, whose champions are considered real stars. To Kokoro Koyomi, however, all this is precluded because of her strict father, who forbids her to even talk about it. One day, she secretly gains access to Box, but remains stuck in the virtual reality because of a bug.

Half a century ago, the human race was attacked by an enemy from the sea known as the AUS. When Reiji Shiroyama was little, he was unable to protect his sister from the AUS because the gun he tried firing jammed. Since then, Reiji refuses to trust guns and only trusts his fists.

"An anthology of an adult puffing at blue smoke quietly" Various well-known mangaka look into the theme of cigarettes and smoking.

It's the year 2034 and high school student Sasaki Hiiro boards his bus just like any other day. Everything changes, though, when his bus is suddenly attacked by a mysterious girl with red eyes. When Hiiro awakes, he finds himself in "Tokyo," a city which was supposed to have been permanently sealed off after the outbreak of the deadly Pandora Virus ten years ago. Not only that, but it also seems like all those being gathered in "Tokyo" are developing new inhuman abilities. Now, among the ruins of Shibuya, Hiiro and his friends must discover why they are here and learn all they can about the terrible Malicious Code that is running wild in their bodies before it destroys them all!

Japan is a seismically active country, so the occasional trembler isn't anything that people get too worked up about. They happen and it's unfortunate, but in general Japan is prepared. But there is one scientist who believes that he has found proof that a recent quake has triggered a cataclysmic event, and that within a year Japan will sink into the sea. Now if he can get anyone to believe him before it’s too late…
Also known as Japan Sinks, this is based on the award-winning novel and movie of the same name.

Eraser, the mysterious enemy that invaded Earth 13 years ago!! Before their overwhelming power, the entire Earth neared the verge of collapse. But at the last moment there suddenly appeared Earth's lone savior, The Beast: an ultimate weapon uniquely equipped to counter the Eraser's power!! The Beast is part of the MAGIC Brigade, whose commander-in-chief is also the founder of our Le Prince Academy... Ladies and gentlemen, I present to you, Mr. Vincent!

The Cosmic Era. Coordinators, born through genetic modification and Naturals, who are born naturally. Both experienced two great wars. People devoted themselves to fighting for things they believed in and things they should protect. Fighting gives birth to hatred and hatred in turn gives birth to sorrow. The battlefield swallows the fate of the soldiers and turned into the gravestone to an invisible future. Although a transient piece arrived in the end, the scars of war run deep. Yet in such a world, there were those who walked a path they strongly believed. Engineers giving their lives and roles to that which was discarded and destroyed: Junkers. Those who fight for those without power: Mercenaries. Those who convey the truth to the people: Journalists. Even if they deviate from the noble path, they will follow a path they believe in according to their own beliefs -Astray.

On an alternate Earth in the not too distant future, a monster is found by 2 kids, and shortly after a 3rd friend joins the group. It's a story about the monsters journey through life as he tries to find out who and what he is...and about his true destiny. https://www.facebook.com/grumblemanga?ref=hl