There is an ancient government office, which was first founded by Queen Himiko, to deal with difficulties arising from supernatural forces. Even today, that agency secretly exists and deals with curses and other dark forces that threaten Japan.

Kushinata Orochi is skilled in these supernatural arts, and he and his physically powerful sidekick Ayame take on cases that deal with supernatural troubles. Now, they have a very ancient and powerful force to deal with in Kageyama City...

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.

"In a Fight, they say that the first one to bleed from his or her nose is the loser. Father, Mother and Brother...They're all LOSERS that bled from the nose facing that damn monster called WORLD!

I'm not going to fall into that one. Even though I have to break my head, I'm not going to bow my head before anyone. I'm going to finish everyone! I'm going to throw everyone on the ground with the "Ushi Mata".
Even though my opponent is...a GIRL"

The Boy that doesn't bow his head to anyone...
SUK DONGMIN

Set within a ravaged world, a girl protects the people from these monsters is interwoven into this mysterious fantasy.

This is a oneshot from the Moonsorrow Collection II.

"Originial" doujinshi by the circle Moonsorrow.

From ADV:

A mysterious creature has fallen from the sky and landed right at young Yuina's feet! Branded as the master of this new angelic being, Yuina is forced into an otherworldly pact, one that will take her beyond the clouds and into battle against a new and yet hauntingly familiar evil, one that patiently waits in the shadows.

When a devastating meteor struck Earth, Earth's guardian angel Lyu was so tortured by guilt that she killed herself. Mo Ye, the demon who was in love with Lyu, is determined to find her again. Has he found Lyu's reincarnation in the human Xiao Tian Nu?

From AQUA Scans:

"In an accident at the meat factory, the heiress was heavily injured. Guiltily, I agreed to her request, but this very same request have let me enter into a wonderful life..."

From Storm in Heaven:
There is a special organization known as "anonymous" which takes children and raises them without names, without feelings, without souls. Then it sends them out to kill. Can emotions get through to these cold-hearted killers?

A sequence of stories that deal with a few of the organization's members.

Nobunaga, Reona, Yuuto and Kotaro are the four members of the Animal Rangers, led by Hideo. The four of them use their animal-based powers to save the world from the evil organisation X-Ponzu and its leader, Nyaro.

The series is based on a radio show starring the seiyuu Hideo Ishikawa, Nobunaga Shimazaki, Reona Irie, Yuuto Suzuki and Kotaro Nishiyama.

(Source: The Zero Alliance)

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)

There is a competition for those who possess the spirit weapons. Only someone with one of these weapons can defeat another.

Enter our protagonist, a clumsy flower girl who one day embarrasses a weapon master...

What is our flower girl going to do? What is the purpose of this competition?

Inside the jungles of Vietnam, a courageous Special Ops. Unit is fighting the most infamous war of decades past—the Vietnam War. This bold account follows the brave exploits of Sergeant “Perky” Perkins and his unit… of rabbits! Join Rats, Perky and Botaski as they fight against the cats of the Viet Cong. From the Tet Offensive to the My Canh bombing, watch these commando-style bunnies through an anthropomorphic lens as events unfold and violence erupts.

Non-human cast of characters notwithstanding, this compelling and painstakingly-researched work places an emphasis on factualism in order to accurately portray the events of the Vietnam War. With a fresh perspective on one of history’s greatest calamities, Apocalypse Meow is a daring new take on a conflict that won’t soon be forgotten… especially after these young rabbits are done!

The Seijou Girls' Academy kendo club has travelled to Shoushinji for a summer training camp. Off the coast of Shoushinji is an island, Urashima, which is tied to a series of myths about oni and the "Onikiribe" who have traditionally being charged with their extermination.

A modern-day re-enactment of this folk tale begins when captain Osanai Syouko and manager Aizawa Yasumi stumble across a beautiful and mysterious young girl washed up on the beach.

Note: This is an official manga based on the PS2 game Aoi Shiro, which is a sister game to Akai Ito.

Sweet young Kai and the doctor Maria shared a bond that they thought no one could destroy...until Maria's brutal murder tore her from Kai's arms forever. Now, Kai wanders the pitch-black streets of the inner city searching for the man who stole Maria's life. But will he end up a pawn in a gang war that will force him to fight for his very existence? With both a mysterious electronic frequency and a strange, powerful man named Lahti shadowing his every move, Kai must slay his new-found enemies...or fall prey to their desires.

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)

Prince Lucas, after many years of absence, returns home to save his country from Duke Demonas, a merciless man who killed his parents and stole the throne. And what's this... he does it by using a strange power!?

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?

Consecutive wars of the 21st century have taken their toll on the world and humanity.A mercenary organization by the name of SHRIKE has mysteriously gotten hold of a device that produces infinite amounts of clean energy with seemingly no fuel needed.Along with it a new type of bio-armor never before seen in action.This new weapon is known as secto-armor and has become the terror of the battlefield. Using its endless power source and the secto-armor technology SHRIKE remains dominant over all military powers and refuses to give the device to the countries of the world less they apply it to more weaponry and annihilate what remains of the already torn earth. SHRIKE and the secto-armors now have to fend off wave after wave of attack from countries greedily wanting the device that could end the world.