Akatsuki: a powerful demon of illness, which infects victims, turning their eyes red, and slowly kills them. Usually, they take the form of a strong monster connected to the victim's body. The only way to cure the victims infected with Akatsuki is to slash the victim's body with special anti-Akatsuki weapons, known as "Crave." The people who possess and use these weapons are called "Kiri-Isha" (Slash Doctors). Hibiki, the protagonist of this story, is a Kiri-isha. He is partnered with Kirisa, another Kiri-Isha. Their mission is to cure people infected with Akatsuki.

Set in a world of a single continent divided by the Lutoni River and Central Mountains into two warring countries, Roxche and Sou Beil, the story follows Roxche pilot Allison and her childhood friend Wilhelm in their dangerous quest for a fabled treasure in Sou Beil territory that may end the war between the two nations.

From Del Rey: A strange virus is making its way around the globe, causing its victims to commit suicide. In less than a week, it's become a lethal pandemic. But for a unique few, it does just the opposite... They evolve and become "Power Users." Taisuke Kanou and his best friend Hirose both become power users, but Hirose sides with Katsumata, a strange man with no regard for human life. The story follows Kanou as he discovers the secret behind his powers, encounters reporters, other power users, and even the military, as he tries to get his friends back.

From Tokyopop:

Beautiful creatures called 'Alichino' grant any wish to those who find them--but at a price!

A young lady searching for an Alichino wants to bring her brother back to life. She meets Tsugiri, a handsome young man who she thinks is an Alichino. While Tsugiri turns out to be a mere mortal, he does have a mysterious connection with these rare creatures--a connection that brings him and those around him grave danger!

She has lots of friends-
but hasn't had that important conversation...

She has a boyfriend-
but there is another girl...

Family too-
Her family... the only connection is through blood.

That kind of average high school girl-
Saitou Aya is suddenly lost in Wonderland!

The white bunny boy talks like a child.
"You are my Alice. Our savior..."
Aya = Alice's "Chosen world"?
Her "real self" is...?

From Shoujo Manga Maniac:

Tsubaki Kamui is the granddaughter of a prestigious antiquarian. A mysterious man named Sena Takuto asks for an appraisal on an artifact, one that he stole in order to prove that he is the grandson of the Grand Duchess Anastasia. Is this thief really descended from the house of Romanov? Will Kamui help him?

The incredible adventures of Amilova, a teenage girl that discovers her Fire Super Powers ! Action, magic, mysteries, love and humor... A show full of emotions!

From MangaHelpers:

The story begins with regret, chaos, and desperation. Sora lives with his little sister, An, and his rather comical father. An is the soloist of her school's chorus, and Sora is an awesome cook. Sora prepares his "honki" (serious) bento for his sister's school concert.

Once An begins her solo, a mysterious force creates a rift in reality, as An's existense shatters right before everyone's eyes. Sora runs in to save her, but he too becomes part of this dark ritual. As Sora ends up transported to a fantasy world full of gigantic mushrooms, nothing can be certain on what will happen to these two.

27 year-old Ayukawa Yuuji has never been much of a man. He's more comfortable sewing than fighting, he faints at the sight of blood, and his fiancee is tougher than he is. He's also a terrible pushover. So when his boss at the medical lab volunteers him for some experimental drug therapy, how can he possibly refuse? All's mediocre for Yuuji: master of the pathetic.

Mediocre, that is, until a juvenile mass murder suspect jumps out from under Yuuji's bed, declaring him his "mate." Before Yuuji has time to argue, the stranger transforms into a 16 foot-tall dinosaur and beheads his roommate...

Yuuji suddenly finds himself the sole target of a lost race that turns into dinosaurs, an extremely scary woman with a Goddess-Complex, the yakuza, a mad scientist and one 17 year-old boy who really, really, really wants to sleep with him.

Series:
1. Aragami no Ichizoku (4 volumes)
2. Daichi no Okite (2 volumes)
3. Genshi Sairai (10 volumes)

27 year-old Ayukawa Yuuji has never been much of a man. He's more comfortable sewing than fighting, he faints at the sight of blood, and his fiancee is tougher than he is. He's also a terrible pushover. So when his boss at the medical lab volunteers him for some experimental drug therapy, how can he possibly refuse? All's mediocre for Yuuji: master of the pathetic.

Mediocre, that is, until a juvenile mass murder suspect jumps out from under Yuuji's bed, declaring him his "mate." Before Yuuji has time to argue, the stranger transforms into a 16 foot-tall dinosaur and beheads his roommate...

Yuuji suddenly finds himself the sole target of a lost race that turns into dinosaurs, an extremely scary woman with a Goddess-Complex, the yakuza, a mad scientist and one 17 year-old boy who really, really, really wants to sleep with him.

Series:
1. Aragami no Ichizoku (4 volumes)
2. Daichi no Okite (2 volumes)
3. Genshi Sairai (10 volumes)

27 year-old Ayukawa Yuuji has never been much of a man. He's more comfortable sewing than fighting, he faints at the sight of blood, and his fiancee is tougher than he is. He's also a terrible pushover. So when his boss at the medical lab volunteers him for some experimental drug therapy, how can he possibly refuse? All's mediocre for Yuuji: master of the pathetic.

Mediocre, that is, until a juvenile mass murder suspect jumps out from under Yuuji's bed, declaring him his "mate." Before Yuuji has time to argue, the stranger transforms into a 16 foot-tall dinosaur and beheads his roommate...

Yuuji suddenly finds himself the sole target of a lost race that turns into dinosaurs, an extremely scary woman with a Goddess-Complex, the yakuza, a mad scientist and one 17 year-old boy who really, really, really wants to sleep with him.

Series:
1. Aragami no Ichizoku (4 volumes)
2. Daichi no Okite (2 volumes)
3. Genshi Sairai (10 volumes)

In the only neutral country surrounded by many other countries, Kourozen, also known as God's country the princess, Matsurika, is troubled by a proposal from Prince Orland of Cantabria, a major power. One night, Matsurika is suddenly kidnapped by an intruder and brought to the open sea.
The man, Raju, who calls himself a pirate, says he will sacrifice Matsurika on the legendary altar, to attain his wish. The princess of God's country, the pirate surrounded by mystery.
A pirate tale about an ancient lore and the legendary altar. Let the battle begin.

A collection of stories:

• Ao no Rhapsodia
There's a legend about a lost continent of gold and only one man has successfully made his way through the treacherous waters to that continent. The man entrusted the map to the lost continent to his daughter, Allegra Reese, making her the prime target for every pirate on Edythe Island.

• Beniiro Kyousoukyoku (Crimson Rhapsody)

• Watashi no Suteki na Hito (My Favorite Darling)

• Ou-sama Game (The King's Game)
Nene, a young assassin girl, has orders to kill king Ruu, so she goes undercover as his maid. But things are not always what they seem, and this seemingly stupid king has his own agenda. So the story begins, with Nene on her mission, while the perverted King is out to hit on her.

• Natsu no Requiem (Summer Requiem)

Anuki is a boy caught in a war between two countries. When he was small he was abandoned by his father so that a princess could be saved. This event triggered amnesia in Anuki, as such he doesn't remember his childhood.
As he grows up he decides to join a flight of mercenary units to be trained as a pilot so that he can help in the war, there he becomes the ace pilot and is highly aclaimed for his skills. But is he fighting for the right side?

The story takes place in an era similar to that of ancient Rome in a country called Cronos. It follows a group known as the Temple Mercenaries. In particular, the manhwa is about Ares, Michael and Baroona, three young warriors with mysterious pasts and surpassing skills... The manhwa is notable for its subtle use of anachronistic elements (Ares' shoes are similar to that of classic Adidas), as well as very dynamic and fluid action sequences.

The great warrior Leon Manas, son of the legendary Nathan Manas, now carries the powerful sword Brumhart. Though this blade is coveted by many, only the heirs to the House of Manas can wield it. But that doesn’t stop the sinister from trying.

Ernan, the once trusted knight of the House of Manas, murders his commander Leon, robs his corpse of Brumhart, and orders the death of Leon’s only son, Zian. But the men sent to perform this infanticide come up against a mysterious figure in a dark cloak who defeats them, only to disappear with the child into the thick of the Tass Forest.

Sixteen years later, Ernan has become a feared tyrant, but still has not been able to unsheathe Brumhart. Thus begins the tale of this desperate king and the young boy who would become one.

Note: This manhwa is based on the MMORPG.

Every 30 years, a new princess is chosen from the Hime family to serve the Hayagami. The time has come again, but over these past years, records state not a single female has been born, save for one, the 15-year-old Arata. The only problem is, Arata is actually a male! Forced to disguise himself and take the place of the princess candidate until a formal one can be found, he attends the festival only to witness the current princess, Kokuri-hime, murdered, and his own life is forfeit as well, by the hands of the princess' personal guard, the 12 Shinshou. As he runs for his life, Kannagi of the 12 convinces everyone that Arata is the one who has murdered the princess instead, and now everyone in the Imperial Court is after his head! Now, another Arata from our world has crossed over in Arata's place! How did this happen, and how will these two survive?

The story centers around twin brothers, Arago and Ewan, whose parents were slaughtered by monsters. Years later, the vengeful Arago crosses paths with Ewan, who has since become a police officer, just as blood begins to flow again in the streets of London.

A mysterious disease is spreading amongst the reyvateils, causing them to go berserk. The key to stopping them lies in the hands of Espada Reid. The only problem is: he hates reyvateils. Will he be able to overcome his feelings and stop the reveris illness?

Tastumi is a normal boy going to school and living with his strict older brother. Orphaned at a young age, his brother has been both a mother and a father to him. One day, he and his friends are about to rescue a beautiful girl from being harrassed when she beats them up herself. When she sees Tatsumi, she suddenly calls him "Rui". What does this mean? Who is the girl? Why are there strange men attacking him all of a sudden? And why is his brother suddenly so different??