From Yen Press:

In the year 2022, gamers rejoice as Sword Art Online - a VRMMORPG (Virtual Reality Massively Multiplayer Online Role Playing Game) like no other - opens its virtual doors, allowing players to take full advantage of the ultimate in gaming technology: NerveGear, a system that allows users to completely immerse themselves in the game world by manipulating their brain waves to create a wholly realistic gaming experience. But when the game goes live, the elation of the players quickly turns to horror as they discover that, for all its amazing features, SAO is missing one of the most basic functions of any MMORPG - a log-out button. Now trapped in the virtual world of Aincrad, their bodies held captive by NerveGear in the real world, users are issued a chilling ultimatum: conquer all one hundred floors of Aincrad to regain your freedom. But in the warped world of SAO, “game over” means certain death - both virtual and real…

Compilation of short stories:

Hotel since A.D. 2079:
It’s an updated version of 'Hotel – since 2079' (korean version) with a different ending. A computer continues to live on in order to complete a mission in a world where all life, including Mankind, has gone extinct. This is a record of those 27 million years of its heroic struggle.

Present:
Hanako suffers from a terrible disease. After awakening from a deep slumber, Hanako has only three days to live. During those three days, her husband, Takao, must endure a heart-breaking experience, knowing that the person Hanako really loves isn't him.

It was all for the tuna:
Tunas went extinct and Jun Shiozaki will do everything possible and imaginable to bring them back. A perfect mix of Sci-Fi and Humor.

Stephanos:
Set in modern-day Japan, our main character Noriko finds out that she is pregnant with her lover Matsumura’s baby. He, however, is an important doctor with a family and everything already. Noriko wants to have the baby, but Matsumura says that it’s actually a rapidly growing cancer and that they have to remove it immediately. It might also be neither of these things…

Diadem:
A quest for freedom led by Lilith.

Note: Won the Gran Guinigi 2011 for the Best Short Story for It was all for the tuna.

Souki Hiiragi was a normal small town boy whose only desire was to make cute girls happy. But one day at the beach he gets caught up in a giant robot fight! One robot attempts to defend him; this robot is the Jinki--which requires two operators to run properly. One operator sacrifices himself to save Souki, but now the other operator needs a partner! She being a cute girl, Souki steps up to the plate!

Another Earth has been discovered by an astrologer in the US, giving it the name "Jamais Vu," French for "Never Seen."

That Earth is soon discovered to be a group of aliens, going around the galaxy before arriving in the actual Earth to kill people and appear like them.

In the near future, a BCI controller that reads your brain signals and allows your consciousness to dive into the virtual world of the Internet has become extremely popular.

Katsuro, who was arrested for a certain crime, was adopted by police officer Yumeji and serves his prison term while living with his adoptive sister, Rin. However, at the request of his adoptive father, Katsuro investigates Internet crimes in exchange for reducing his punishment, bit by bit.

The happy life of Kurumi and Haru suddenly ends by a plane accident. In order to recover her willpower to live, the android Q01 is provided as robot "Hal". During her life with Hal, Kurumi gradually opens up to the android and for a while it seems as if she will recover from Haru's death. However...

From DrMaster:

Hiro is a high-school student refusing to go to school after a traumatic run-in with the local bullies. But his feeble life is forever changed when, one day, he applies online for a new gadget called "JUNK".

Prequel and side stories from the main story of Needless Manga. Volume 1 also contains prototype one-shot "NEEDLESS 1.5".

God appears among us once every 90 days… And those who issued oracles from God, as the family of God, are taken away by Him. The people call the family of god “Sun” and send them forth with shouts of encouragement. “Suns” are truly human vessels envied by all for having received the greatest glory… However, There was never the slightest hint of joy in the expressions of those taken by God.

"30,000 residents of the Northern Kelko plains were vaporized by the Kiyania bioweapon sprayed by the terrorist group Echiboza. 30,000 cats remained in their place. However, one person escaped this fate; a girl saved by a stranger with a gas mask.

Her name: Kaka Hollen."

In this strange new world, terrorism, crime, and corruption have found a new target in the feline kind. Enter counter-terrorism squad 'Green' and their all-purpose humanoid weapons, the 'OB's! But what role will Kaka play in midst of all this?

Kaitai is a science-fiction-ish BL story of bio-engineered humans, sinister policemen and moody scientists with mysterious pasts.

Set in a depressing, fictitious London from somewhere in the near future, this manga is representative of Ishihara's earlier, non-yaoi works; rough, sketchy artwork accompanied by an interesting plot the likes of which is rarely seen in the shounen-ai demographic.

1. Sanbika
In a far country ruled by a beautiful Duke who seems to have formed a peculiar relationship with his right hand, Lord Yuri, there are cases of unexplained deaths... they would involve a vampire according to the spreading rumour.

2. Killing Moon

3. Life of the Machine
Koreya Takane, a famous scientist, had enough of the constant obligations required by his position when all he really wants is to be left alone with his work. That's how, in order to satisfy his taste for solitude, he build up a mechanical clone of himself... But what if it becomes impossible to distinguish the replica from the original man in the end?

4. Prince of Monster
A kind prince with strange red eyes who had been locked up by his uncle decides to end his misery... without knowing the grief it'll cause to his brother. He suddenly reappears 13 years after but what if he really has become the “Prince of Monster” as he used to be called?

5. Bye-Bye Mizuhara

A dramatic story set in contemporary Japan, about a guy with amnesia, who finds out he was turned into a super-cyborg in a corporate weapon research program. He goes on a mission of revenge. A little shallow, perhaps, but a good example of shounen SF/action manga. The manga ended abruptly, because the magazine it was being serialized in changed its target public and it was decided that Xenon didn't fit in anymore.

"Do you remember, the moment your love first began?"

Two office workers who misunderstand their importance to one another, a young flautist and the woman who loves her, a rebellious schoolgirl who falls for a blind girl, two sisters who have always been close, and an AI researcher and her creation. None of these really has any 'link' to one another. The links are forged between the women in the relationships, and between them and us as we watch their love blossom into something real.

Includes:

• Kakera
Two sisters that are living in the same room. Their connection is a bit more than a normal sister-sister relationship. One of them eventually has some cruel reactions. What will be the end of it all, well read and see.

• Hearing the Sound of Bells
Hirose Tomoko, a music conservatory student, never found the time to forge new friendships because of how dedicated and hardworking she was as a flute player. Then again, she was never a social bee like her active friend and fellow student-flute player, Okamoto Hiromi. Will Okamoto-san be able to convince Tomo-chin of her sincerest intentions or will Tomo-chin spend another Christmas alone with her flute?

• Linkage

• Kusari wa Mou Iranai

• Present
Keiko looks the complete opposite of who she really is, appearing mean and ruthless while being a regular girl on the inside. Seeking asylum from both her incurable lonliness, she meets Haruka who happens to have the one defect that works in Keiko's favor...

Source: Okazu

N/A

After 2050, Tokyo. The sixteen-year-old gifted police detective Kyouko Karasuma works for a special devision in the Asakusa Police Department. Her rather abnormal cases involve: fighting oni, tengu, and other monsters from Asian myths and legends. The modern art by the character designer of Speed Grapher works very well with the action-heavy story line and the overall art improves with each volume.

This is Masashi Kishimoto's manga, Karakuri. It was created before Naruto and was collected in Naruto: The Official Premium Fanbook.

In order to combat a deadly virus, an implant was made that is transplanted into a human being's nervous system. Unfortunately, this implant technology was also used by the less scrupulous to create human weapons, blood-red eyed creatures referred to as "Roido". To cope with this threat the defense agency has created the Karakuri unit, an elite unit whose human members are monitored by small talking animals. As Kiru the karakuri goes to visit his friends Koten and Koron while on leave, he's going to learn that there are no days off against the Roido!

From Broccoli:

Spirits known as kamui are thrown into chaos when the sacred spirit Okikurumi is taken from Atsuma's village, and the imbalance threatens to destroy Earth. Infused with the spirit of an ancient sword, Atsuma must leave his village to reclaim Okikurumi.

He encounters NOA, an organization of youths who wield the power of the kamui, and who may hold the key to Okikurumi. Atsuma is recruited into NOA by Sumire, a young woman with an empty soul who yearns for a miracle. Atsuma and his new companions must work together to find Okikurumi before the world is destroyed.

Girard and ViVi are special government agents known as "Right Arms" whose job is to seek and destroy people who have become infected.

In their world, a weird virus that turns people into monsters has run rampant. The only way humanity can survive is to keep tight control on the infected to prevent the spread of the virus. If the virus' symptoms appear, the person must be disposed of. It's a tough world where even children must sometimes be killed to give humanity as a whole a chance to survive.