From MangaHelpers:

There is a large virtual space called "Deep Forest," where many people go as avatars. Origa is a schoolgirl who has become an explorer in Deep Forest in an effort to discover the reason behind her mother's death. Luckily, she has a famous hacker as a partner and guide, a monkey avatar called Jr.

Deep Forest is a dangerous place, contested by the company she believes is responsible for her mother's death, hackers, and others. Origa has a difficult path to travel in order to uncover the truth. [tethysdust]

In an era of space travel, there is a small restaurant in Jupiter's orbit named after its owner, Motoka. People coming to or leaving the stars come through her small restaurant, and she always has something to serve that speaks to her customers' hearts and memories.

One night, a strange object falls on the head of Nitta, a member of the yakuza. Inside the box is a strange young girl named Hina. She has tremendous supernatural powers, and Nitta finds himself reluctantly taking her in. Her powers can come in handy for his yakuza business, but he also runs the risk of her using them on him! Not to mention, if she doesn't use her powers, she will eventually go berserk and destroy everything around her. Nitta and Hina's strange life together is just beginning...

Nine years ago, three seeds were planted, and now they turn into three roses. Behind the girls have been chosen, their wings of destiny open. Bloodlines and hunters, roses and demons, love is like a symphony playing a melancholy tune.

2057.
Hemisphere, a man-made city in Tokyo Bay, has wiped out virtually all crime by introducing the quantum AI system "XEVEC", through which the "law" acts as a physical force to protect all citizens. Hemisphere is a "utopia", an ultra-nomocratic society in which the righteous are rewarded and permanent peace is guaranteed. Or so I thought. Until that incident...
Confronting crime in a near-future city! Physical court battles are now in session!

The official manga anthology of the hit mobile game, Dolls Frontline (Girl's Frontline Japanese's title), by various manga artists.

The manga is a prequel about these four girls who would eventually make up Team RWBY upon enrolling in Beacon Academy.

In a certain town exists a laboratory named "King Lab" that houses genius scientists who have way too much time on their hands. One day, the culprit of a series of murders arrives at the King Lab and a strange dark comedy begins to unfold...

Three childhood friends (men) were lamenting about their unhappy lives when a strange beauty with the power to stop time appeared. She introduced herself as an agent of an organization called "Society", and invited them to join a game: after 300 days, the most unhappy one would have all his wishes fulfilled. Who was this girl, and what would become of these three men?...

Loose adaptation of Osamu Tezuka's Dororo. After the war, robots were creatures mass-produced as labor that, now, overflowed the city. Some were on the street and some in the back society, creating bonds with the citizens. One night, a girl who is neither human nor robot appears in front of a Yakuza creature that had seized the orphan Doro. The girl, wearing beast's fur, attacks the creature reveling extremely strong weapons attached on her limbs. Who is she? What is she fighting for?

Prayers follows Jonathan and another young boy named Asuma, who both seek to become Samurai. A mysterious samurai saves them when they were young from the fallen angel Amy.

Subaki Sadamitsu is a young punk and Leader of the Corpse Gang who, after a chance encounter with an alien robot, is forced to take up the task of capturing rukeitai (intergalactic criminals). His job is made harder with the appearance of the Vulture, a last ditch effort to keep the rukeitai under control.

At the end of the 20th century, global climate changes have begun to occur. A mysterious organization of persons with superhuman abilities, the Overworld, was formed on an island in the Pacific Ocean. When Sigrid Aoyama sees her friend Yuri being taken away by members of Overworld, she enlists the help of Wilma to chase after the captors.

The first full serialization made by Kobayashi Ritz of Saki fame.

At the end of the twenty-first century, a rare disease named "Cagaster" began infecting the human race — transforming them into massive insects. Two-thirds of Earth's population had been devoured by these insects before humanity came to a decision: those that were infected must be exterminated.

In the year 2125 — thirty years after the discovery of Cagaster — a young exterminator named Kidou finds a man dying from insect-inflicted wounds at the edge of the desert near the insects' "cage". The dying man entrusts Kidou with his daughter, Ilie, and tells him to seek out the girl's mother.

A war between Humans and Magi-tech organic weapons Called "Gears." Features seven characters from the game series.

Sagara becomes a girl in his third year of middle school, and has to deal with his crush on Kurosawa, a female classmate.

Includes an extra story featuring Mamiya and Miyoshi from Kanojo ni Naru Hi five years later in volume 1.
S no Kaikoroku is the extra chapter in volume 2.

An Earth Federation Army special forces unit called Barghest (or BGST for short) in UC 0084 is created with Lieutenant Colonel Ittou Tsurugi serving as its commanding officer, who is the only officer in the EF military known to carry a katana with him wherever he's on duty.

After Japanese-American FBI agent Taki Kazuya and Kamen Rider 1 defeat a bat monster, they decide to contact the former riders including Stronger to investigate the appearance of monsters attacking them and civilians. Their investigation reveals the coming of an alien empire out to destroy the Earth, finishing the work that Shocker and other terrorist organizations have failed due to their defeat at the Rider's hands.

Post-Apocalypse story set in Tokyo, 2037. The story of a man's revenge after he lost everything.

The story of Steins;Gate takes place in Akihabara and is about a group of friends who have managed to customize their microwave into a device that can send text messages to the past. As they perform different experiments, an organization named SERN who has been doing their own research on time travel tracks them down and now the characters have to find a way to avoid being captured by them.