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!

From Yen Press:

Each year, the Ushiromiya family gathers at the secluded mansion of its patriarch, the elderly Kinzo. It has been six years since Battler joined his cousins at the annual event, but their happy reunion is overshadowed by worsening weather and an eerie premonition from his youngest cousin. When their parents’ conversation turns to the division of the inheritance upon Kinzo’s imminent death, Battler and his cousins reminisce about the stories their parents teased them with as children-tales of the witch, Beatrice, who haunts the island’s forest. But when people start dying unnatural deaths, Battler can’t help but wonder…

Question Arc
1. Umineko When They Cry Episode 1: Legend of the Golden Witch
2. Umineko When They Cry Episode 2: Turn of the Golden Witch
3. Umineko When They Cry Episode 3: Banquet of the Golden Witch
4. Umineko When They Cry Episode 4: Alliance of the Golden Witch

Answer Arc
5. Umineko When They Cry Episode 5: End of the Golden Witch
6. Umineko When They Cry Episode 6: Dawn of the Golden Witch
7. Umineko When They Cry Episode 7: Requiem of the Golden Witch
8. Umineko When They Cry Episode 8: Twilight of the Golden Witch

The side story arcs are:
- Umineko Biyori
- [m]Umineko no Naku Utage ni: Tea Party of the Witches[/m]
- Umineko no Naku Koro ni Episode X
- Umineko no Naku Koro ni Tsubasa
- Ougon Musoukyoku
- Umineko no Naku Koro ni Shi: Forgery of the Purple Logic

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.

Something strange is going on in "Soil New Town." The sudden disappearance of a seemingly normal family leads the two detectives Yokoi and Onoda to the idyllic town in the middle of nowhere. What looks like a routine case at first quickly turns into a complex and deadly riddle where nothing is what it seems to be. Will the two disparate investigators manage to solve the mystery before it's too late?

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.

Riu is the only daughter of Kioka Saenji, the 11th generation head of the famous Rokugi Kabuki theatre house. Since she was small, she has had a recurring dream about a man under the red moon - a man she didn't know, until she attended one of the performances of her brothers. The man turns out to be Rui, one of the heirs of the Akatsuki house.

The Akatsuki House is distantly related to the Rokugi House. Just recently, the 10th head of Akatsuki House, Ashikawa Enjuuro, died. The family is on the process of choosing his successor among the three adopted sons, one of which is Rui.

What relation will Riu have with Rui? Why does she dream of him dying every night?

In this forest, there is a bear only children can see. If you can escape the forest after spending one day with that bear, you can become whatever you desire. A young girl sets foot into the dense forest of legend and what she encounters there was…

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.

Come join this game! You will have everything that you desire, or you will lose your own life. It's now or never!

From That Scan Group:

An existence gained from exchange of life.
A world filled with pain and darkness.
At the edge of despair, Writer J starts his solitary struggle.

Touu, a half-human youkai with a fondness for sweets, manages a pawnshop in a secluded part of town.
Wan Lon, the bad-tempered young man who has become Touu's manservant in return for his help preserving his beloved sister's 'memories', gets all the troublesome jobs pushed on to him.

The shop deals in human emotions. Any forbidden or irrepressible emotion that is tormenting the customers will, with their permission, be turned into crystal and pawned. Of course, it doesn't hurt that these beautiful crystals happen to be the sweet-toothed youkai's favourite food...

This series follows the story of how Batou and Kusanagi met during a civil war and is also a parallel story to the Arise OVA series with Batou as the lead.

From Yen Press:

“Ahead lies what you seek…but to claim it you must lose something dear.” When a mysterious hooded stranger confronts Sora, Donald, and Goofy with these words, leading them to an ominous castle, the trio is sure they’ve stumbled onto an important clue about rescuing Riku and King Mickey after they were trapped in the darkness. But what looms ahead is Castle Oblivion, and to walk through its doors is to pay a heavy price. What are Sora, Donald, and Goofy willing to give up to be reunited with their friends?

Twins, separated by fatal illness and a selective cure. Kasumi and her sister, Shizuku, were infected with the Medusa virus, which slowly turns the victim to stone. There is no cure, but of the two only Kasumi is selected to go into a sort of cryogenically frozen state along with 159 others until a cure is found. At some point in the undetermined future, Kasumi awakens to find herself and others who were in suspended animation in an unfamiliar world with violent monsters. Resolving to unlock the mysteries of her current situation and the fate of her twin sister, Kasumi struggles to survive in a treacherous world.

The two volumes contain one long case, "Murder Committed by Inspector Kenmochi", as well as two short stories in the second volume. The first one-shot, "Evil Spirit at the Diving Pool / Diving Pool's Evil Spirit" was first published in the July 2009 edition of Shounen Rival and is about an evil spirit at the diving pool at Kindaichi's junior high school. The second one-shot is titled "The Campsite's Mysterious Event." Both short stories feature Kindaichi in junior high school.

A group of students finds themselves on a sinking capsized ship. Together with some zombies. What happened to the ship and why are there zombies aboard? It's a battle against time and the zombies, to save themselves.

Ryuu, who works in a convenience store, recently moved in to an apartment which is rumoured to have a strange history, especially with stories coming from the second floor where he and his neighbour, Kei, lived at. Instead of being interested with the strange things happening in the building, Ryuu is much more interested with his neighbour instead...and ever since he moved in, his neighbour has been doing strange things to him and Ryuu is desperately trying to find out what is going on!