Where the warrior Amon arrives from the moon to cleanse the city of Heian of its demonic taint.

A tale from Rain's younger days when he was searching for a new teacher:

Upon the death of his old master, a young swordsman embarks on a journey to the legendary Country of the Mist where the one he was recommended to is said to reside.

Fate/Zero takes place ten years before the events in Fate/Stay Night, detailing the Fourth Holy Grail War in Fuyuki City.

Sengawa's day job is as an accountant working for the police. But at night, he transforms into a ruthless assassin bringing death to anyone who deserves it. Those who have been wronged and whose grievances the police can't - or won't - listen to, turn to The Man With A Thousand Guns to avenge their suffering.

The Japanese-style epic fantasy "Hoshigami no Satsuki" will revolve around a magic sword and "the strongest protagonist."

Comical sidestories from within the main series' timeline and featuring some new characters.

Collected in Volume 28 of the main series.

Tokyo Swordia, formerly known as Tokyo Metropolitan, has been ruled by the "Swordie" since the Third World War 70 years ago. These Swordie, natural-born swordswomen with an attraction to blades, more or less rule the country, and are considered upper-class members of society.

In order to raise his own social status, Kurou, a human, begins attending an academy of swordsmanship, surrounding himself with Swordies on a daily basis. How will he fare in combat against those born to fight?

From DrCoke at MangaHelpers:

Six years ago, Tsukihiko was caught in an assassination attempt on a little girl, Sami, when he attempted to be her shield. This incident nearly killed him and the girl together, but the little girl was the daughter of an extremely powerful family. With its vast amount of resources, the family was able to keep both Tsukihiko and Sami alive by recreating both of their bodies with cyborg technology. This has forced Sami to permanently rely on wired connection to her life sustaining computer. On the other hand, Tsukihiko has become a cyborg "Knight," sworn to protect Sami from harms way.

There is fighting going on at a high school due to a power struggle for control. A beautiful young girl, the granddaughter of the director, requests help from a tough silly young man renowned for his genius fighting style. At the same time, other beautiful girls appear from the same high school who also want him as a teacher. Will he help and if so, which side will he choose to support? Or will he just show his true face with his bad boy ways?

Zhong Kui, in traditional Chinese culture he was a god who was skilled at dispelling ghosts and other evils. He was born with a fierce and atrocious face. While he was quite ugly, he was also brilliant, outspoken, and tenacious. This story is not entirely based on tradition. It folows Zhong Kui through a fantasy world of ying and yang.

The "battle fantasy" series takes place in a university town by the open waters of Tokyo Bay. In the story, the enemies of mankind are known as "angels" and the school's students train to fight the angels.

From: Easy Going Scans

Mercenary Maruhan, the man who roams the darkness in the time of humanity's doom.

In the ancient era of the super-continent, where no border exists between the East and the West -- the race of Demonic Beasts begins an invasion against the human race, breaking the mutual non-aggression pact!

And as humanity takes to the road to seek refuge, some gather to form the ultimate army for an attempt to kill King Rhode, the Chief of the Demonic Beasts.

The intense story of one certain mercenary starts there.

Dong Nu was an ordinary beautiful girl in her junior year of high school. After an accident, she met a very powerful yellow-haired man. Although his behavior was a little eccentric, he attracted her attention. As she learned more about him, she began to discover that this man had a shocking identity, as he was not just an ordinary mortal... In fact, you might even call him a... Original Webcomic: http://ac.qq.com/Comic/comicInfo/id/524373

From Seven Seas:

Tor Kokonoe has entered the prestigious Koryo Academy, a high school dedicated to training its students to wield Blaze―individualized weapons that a student manifests. The future of a student is often shaped by the form their weapon takes, and when Tor’s appears as a shield, suddenly he’s the odd man out. But that’s when the Duo system comes in, a program where students are paired up. Teamed up with a silver-haired girl named Julie Sigtuna, Tor’s adventures at Koryo Academy are just beginning!

Long ago, a powerful demon lord ruled over the people until an equally powerful hero rose up to defeat him. To counter future threats, Rosewood Academy, a school for heroes-in-training, was created. Today, Rosewood Academy enrolls only the best of the best, and Arnest Flaming is the best of them all. The top student in the school, a dutiful girl nicknamed "Empress of Flame," she has an irritating encounter with a light-hearted boy in the school hallway one day who seems to equal her powers, though she's never seen him before. He introduces himself only as Blade, and Arnest soon finds out not only is he transferring into the school as a new student, but she is personally requested by the King to help him settle in to daily life in Rosewood Academy.

When the Fullmetal Knights Chevalion defeated the Death Universe, peace returned and the Chevalion members returned to their normal daily lives. Well, except for their leader, Retto. For some reason his suit won't come off. So he's stuck as Chevalion Red, and he has problems controlling his powers.

Don’t mess with Ayu – she’s one of the top-ranked Karate club members in the region, although she does have one weakness; snakes. After one fight where she is unconscious because her opponent knows her weakness, and old friend shows up, a young man named Shunpei. He used to be a weakling, but now he may be even stronger than Ayu!

From MangaHelpers:
Finding himself in a war torn Japan that has just lost the war to the US, Zaji wanders the land that used to be a city. Suffering from amnesia, the only thing that he remembers is that he has to remember something important. He quickly learns that he has incredible martial arts combat skills and is able to use it even if he doesn’t realize. It since it seems that it has been engrained into his body through years of training. He is taken in by Gin, the owner of the local bar which occupying US soldiers frequent. Zaji learns the full extent of his strength as he tries to protect the helpless in a devastated society.

From Manga-Sketchbook:

In the previous "Kung-Fu Boy" series, Chinmi became the master of Kempo at Dairin temple, where he trained disciples. When they lose contact with Kyorinji, a temple of the same sect, Chinmi is dispatched to the Kanan Autonomous region to investigate.

He tries to enter Kanan with Pushin, a swordmaster whom he met traveling to Kanan. But they are attacked after trying to enter Kanan and pursued by the Border Police who chase them into a waterfall. A fisherman saves them and aids their entrance into Kanan. The people of Kanan are forcibly oppressed by the government. Chinmi befriends the people and makes the big decision to free them with his Kempo. Sorabi Boru, Lieutenant of the Border Police and Jirai, the evil king of Kanan attack Chinmi...

Mutsu enmei-ryu is an unarmed style that allows the user to defeat any number of armed opponents using incredible speed and strength.

Shura no Toki tells about some Mutsu generation and their important role in history.

1st arc: Yakumo Mutsu (Musashi Miyamoto era) - Vol1

2nd: Izumi Mutsu (Ryoma Sakamoto era) - Vol 2 & 3

3rd: Azuma Mutsu (Izumi's younger brother) -Vol 4

4th: Takato Mutsu (Tokugawa era) - Vol 5 & 6

5th: Kiichi Mutsu (Yoshitsune Minamoto era) -Vol 7, 8, 9 and 10 (elex edition)

6th: Tatsumi Mutsu, Komahiko and Torahiko (Oda Nobunaga Arc) - Vol11,12,13

7th: Tenpei Mutsu (Shiro Saigon Arc) - Vol14

8th: Sakon Mutsu (Raiden Tameemon Arc) - Vol 15