From Girls' Generation Scanlations:

Sagara Yuichi is an aspiring writer who was caught in a convenience store robbery. Despite having the chance to escape, he lingered to gain writers experience, and ended up getting stabbed. During his last breath, a strange guy appeared claiming it was fate. A few hours later he awakens and finds himself sleeping naked next to that strange guy. Then that strange guy tells him that his blood is "S-Class" and that he's going to be Yuichi's lifetime "partner". Will the pragmatic novelist be able to wrap his mind around all this...?!

The beautiful vampire with long, silver hair Daia never attacked a human. He is constantly being watched by Kuro, a vampire hunter, and, because of this, he is always trying to run away. He eventually ends up in Japan and meet a merchant named Shishou, who then gives him a job and a place to stay. Daia is charmed by Shishou's kindness... Daia, who was always alone, starts to think about to drink Shishou's blood and make him a vampire as well.

From Dan of Population GO:

The land is split between four different countries; A land of kindness, Piadin; a society that lives in harmony with nature, Fastogal; A land of the free-spirited, Caoren; a land of evil, Valden. Each land lives in balance with one an other, but how will things will change once Valden gains the powers of the Colossi, the gigantic warriors of old?

From Yen Press:

Time holds little meaning for Beatrice the Millennial Witch. Replaying the events leading up to the Golden Banquet again and again only gives her more opportunity to play with her new favorite toy, Battler Ushiromiya. The boy's will to resist the witch remains strong as the curtain rises for a third time on the Ushiromiya family's annual reunion. But as Beatrice pulls more and more players into the game, the strain on Battler's defenses is evident. Do the other members of his family hold the key to solving the witch's riddle and sealing her defeat?!

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

A collection of very short and mostly atmospheric stories dealing with urban legends, ghosts, and superstitions all organized around a specific theme (school, visitors, etc.). Some are just two pages long.

The story follows Tohno Shiki, a teenage boy who, after a near-fatal accident in his childhood, gained the mysterious power to perceive lines covering everything around him. When he cuts along these lines, whatever it was immediately falls apart with a clean cut; in other words, killing it. He would have quickly gone insane from living in a world that could fall apart so easily, had it not been for a wandering self-proclaimed magician who gave him a pair of glasses that blocked his unnatural perception when worn.

Soon afterwards, he was disinherited from his family and sent to live with some relatives. For eight years he lived a normal life, hiding his special eyes, until one day he receives a letter inviting him to come back home. Shiki suddenly becomes caught up in strange and life-threatening series of events, ones that are somehow linked to his childhood accident and a forgotten past...

From the manga habit:

Rio is a 14-year-old boy with no particular special traits, except his burning love for books. He's awkward and considered odd at best by his peers. Rio also has a twin brother, Mao. Although they look alike, they couldn't be more different. Mao is good at everything, is popular, and has future plans to have a big, happy family. Despite their differences, the brothers are close.

One day, when Rio attempts to retrieve a cat that wandered into the street, he is hit by a car right in front of his brother's eyes. Everything fades to black. In the darkness, a voice offers a choice: to live or to die. Fading rapidly, Rio gives the obvious answer: to live!

Rio awakens in a world filled with foreigners and strange animals he's never seen before. That's not the only odd thing–Rio now has the form of a black cat! He quickly learns cats are revered in this world because of their special role as familiars of wizards.

1. Yajuu Kanojo
Naruse likes beautiful things, so he wants to go out with Misuzu, but the moment he does she turns into a beast?!

2. Ookami Kareshi
Continuation of Yajuu Kanojo. This time it's Riku who becomes a beast in Misuzu's eyes. How will she cope?

3. Onnaji Mesen (Eye to Eye)
Hana used to be a lot taller than Souta. Now that they're in high school, everything has changed. Now he's the taller one with a hoard of fans as he is the ace of basketball. Everyday, the distance between the two seems to drift further apart...

4. Bianca
The androgynous second year basketball ace, Aida Leona has been confessed by the kouhai Mori Kenta. Thinking he was gay, and her disinterest in guys, she turned him down instantly. Leo had a crush on a beautiful girl she encountered at middle school, and thus the only person she ever was interested in. But Kenta is persistent, and Leo may have found a connection from Kenta, to finally find her mysterious crush...

5. Chimudondon
Satoru moves to Okinawa and is bored out of his mind because there's nothing to do. Can he find something that gets his heart pumping?

6. Boku no Kirai na Akuma (Evil Resident)
Maa-kun is plagued by a demon that only he can see! How can he get rid of it?
- Delish Scans

16-year-old Asakawa Tomoki, being a bishoujo all his life despite being male, has finally received the ulimate confession... from a vampire.

A vampire webtoon.

A bullied boy struggling with his depression possesses an unusual power to draw phantoms of evil spirit around him. Narrow-minded and timid, he has no hope for himself. Can he overcome the darkness that threatens to engulf him? Author/Artist: http://tapastic.com/ruki

The story of the "sweetie-horror" manga begins when an unnamed character without memories gets lost and arrives at a mansion. There he meets Charon, a naive girl who has a secret.

From Fallen Syndicate: By using the Dark Gate, humans can entrust their hopes and needs to the darkness. The darkness they call upon is a great and evil power, known as "Demon." WIth the help of his partner Miroku, the Demon Slayer Kisaki Senju will slaughter every last "Demon" that is called into existence.

Shingo and Kakami have finally understood their feelings and continued with their relationship, and for some reason, Kakami wants to take it to the next level by living together?

After souls die, corpses still keep their hearts. Both protagonists Inoue and Fujiwara can see those corpses whose human hearts have died. Two lonely and special people encounter each other. They are determined to rescue the people who left their soul's corpses behind and alleviate their soul's pain. This is a moving work that soothes the spiritual wounds!

It is the year 1999. In Nagano Matsushiro stands the pyramid of Japan, the private Voltstein Academy.

This place is famous for repeated occurrences of occult phenomena within its premises. Hence, it is also called the Occult Academy. The dean is committed to studying the occult, while the students are zealous in their everyday schoolwork.

One day, the dean passes away and his occult-hating daughter, Kumashiro Maya, visits the academy. There, she meets a self-proclaimed spoon-bending "time agent" from the year 2012, Uchida Fumiaki. As the two encounter various bizarre phenomena within the academy, the reason for Fumiaki's timeslip to 1999 becomes clear.

Mana is an ordinary high-school student who somehow travels through time to the Sengoku Jidai (the Warring States Period) and encounters Uesugi Masatora, one of the generals. He decides to protect her, while his rival Takeda Shingen targets her. With Mana knowing the outcome of this war, will she change the future?

On the corner of Chinatown, the two of them crossed, The boy name is Inumi Haserou, high-school bodyguard who takes 1000 yen for each trouble; the girl name is Nata, self-styled Sage who mysteriously collapsed in the back alley. Deciding to protect Nata, Haserou would have to face the sudden change in his daily peaceful lives, as a group of Vampiric being who consumed people Ki, called [Demonic Sage] starts to attack them. Their purpose: to hunt Nata, who holds the key as the powerful weapons capable of turning them powerless! Comicalization of a new series written by the Author of Rental Magica, starts here!

Set in a world where history has taken a slightly different course from the one we're familiar with. In Shizume City there is a psychic war between seven kings. The story goes that the Third King, known as the Red King, created a group called HOMRA filled with extraordinary people. If you manage to join HOMRA, you also acquire unbelievable psychic abilities.

Oneshot description:
Hinata is a human girl with a vampire boyfriend, Junya. All she wants is a "normal" boyfriend. Junya goes on a "normal" afternoon date with her, but will the sun be too much?

Series description:
Based on Mitsuki Miko’s popular vampire oneshots comes the serialization of this tale of the love between a vampire and human. Hinata was just a normal girl attending a Catholic school until she hears of the recent incidents in her area concerning a crime scene that looks like the doings of a vampire. He seems to attack only young girls, and Hinata’s suspicion begins to arise that her new neighbor Tokinaga Junya, the author of incredibly popular vampire-human romance novels, may actually be the culprit! Or, is there more to him then what meets everyone’s eye? The laws of vampires in his novels state that kisses are a contract–a contract where the vampires are only allowed to drink the blood of the one they’ve kissed! And yet, this Tokinaga Junya claims he’s never been kissed… could it be, he’s a vampire?!

A volume, Mitsu Aji Blood Tale 0, was released on 24th December 2009.