Nagato [Seyu] was a fairly normal boy, albeit a trap genius. He and his father lived comfortably in a small town. However, that innocent family had secrets that Nagato [Seyu] was only half-aware of. Everyone in the family line inherited a strange sword, a black katana that is much heavier than it looks and is only usable by people of Nagato's [Seyu's] bloodline. They also passed on a strange star-shaped mark on their chests, and as Nagato [Seyu] inherits the mark, the mark on his father's chest fades.

Soon after Nagato [Seyu] learns his family's secrets, his father is accused of treason and is taken away to a larger city. He follows them, carrying along his heavy heirloom. Eventually, Nagato [Seyu] finds that his father has been murdered, hence he sets out for revenge. Along the way, he meets a beautiful assassin named Natsume [ Megumi ] . What adventures could the future hold for these two?

Note:
The names in the [ ] are the names of the characters from the latest scanlated manga release of this series of the first 4 chapters.

In the eight volumes of the series, the mangaka choses some of the most famous operas of all times to tell their stories. The first two volumes deal withe the operas in Wagner's Ring Cycle, the third contains La Traviata, Rigoletto, Aida and so on, each o the volumes containing various operas, their actions being divided in acts following the staging tradition.

From MangaHelpers:
One day, Son happened across a woman, named Shue, that he had loved as an older sister when they were young. It looked like it was the same woman, with the same scars, but Son had thought she was dead. In fact, she was a reanimated corpse, resurrected by a young girl named Fuu to work as her minion. Son becomes Fuu's follower, determined to find a way to return Shue's soul to her body so that she might live again. However, Son doesn't know what he's gotten into with Fuu, though, as she ends up in conflict with many other practitioners of her arts, using Shue's reanimated corpse to do things that Son would rather have never seen.

The manga consists of nine entirely separate short stories set in World War II, each reimagining a famous fairy tale with the European theater of World War II as a backdrop, often with poignant results.

(Source: Hokuto no Gun)

The story happens in feudal era when with samurai and they love stories.

Asato lives with Koume, his housekeeper, in a huge house due to familiar reasons, till the day Asato finds Kichiza badly injured due to some assassins. How come Asato starts his love for Kichuza and how it will go end while Asato is being in constant danger?

Based on Gaston Leroux's "The Phantom of the Opera."

A group of thirteen boys join the children's crusades of 1212. Violence ensues.

Toki wa… is a manga about two guys who travel back in time and visit Tokiwa Manor in the 1950′s. Tokiwa Manor is an apartment building where Osamu Tezuka, the father of modern manga / anime, and many other early influential mangaka once lived.

A story about a sculptor of Buddhist images.

It's a manga adaptation of "Das Kapital" by Karl Marx. It's published under ?????? by East Press, which is a series of paperback manga who are adaptations of masterpieces of literature. It provides an enjoyable introduction to the German socialist's original work, written in 1867. The targeted readers are office workers in their 30s. The fictionalized Vol. 1 of "Das Kapital" chronicles a cheese factory run by protagonist Robin, who rebels against his father's socialist principles and becomes a slave driver after teaming up with a cold-blooded capitalist investor. But Robin struggles between his capitalist ambitions and his sense of guilt over the exploitation of his workers. The book is being translated into English, Korean and Chinese for its upcoming manga debut in the U.S., Asia and Europe.

Daigo Kagemitsu, who works for a Samurai general in Japan’s Warring States period, promises to offer body parts of his unborn baby to 48 demons in exchange for complete domination of the country. When the baby boy is born, Daigo has him thrown into a river, expecting the boy to die. A kind sage, however, finds him and adopts him. The sage fits out his poor son with prosthetics.

Time goes by and the baby grows into a boy who calls himself Hyakkimaru. Every time Hyakkimaru eliminates a demon, he retrieves one of his body parts. Hyakkimaru rescues a boy thief named Dororo from a band of men whom the young boy tried to rob. Together they travel the countryside in search of the demons who possess Hyakkimaru's parts. Throughout their travels, they face a host of monsters and ghosts.

Volume 2 in the Kishibe no Uta series. A collection of four short stories:

Ushinawareta Kishibe (失われた岸辺)
Nishi kara Kita Hako (西から来た箱)
Kumo o Koroshita Otoko (雲を殺した男)
Akai Hata (赤い旗)

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In a country without water, there existed a ritual whereby the people prayed for it. In this country said to be inhabited by the Cloud Dragon, legends speaks of a dragon tamer who can bring rain.

Presenting, a collection of grand oriental fantasies including "The Man Who Slayed the Clouds," and three other stories.

From Viz:
140 years ago in Kyoto, with the coming of the American "Black Ships," there arose a warrior who, felling men with his bloodstained blade, gained the name Hitokiri, man slayer! His killer blade helped close the turbulent Bakumatsu era and slashed open the progressive age known as Meiji . Then he vanished, and with the flow of years, became legend.
Ten years later, a young woman's life is saved when she happens upon a strange wandering swordsman named Kenshin. The young woman accepts the wanderer into her dojo, despite his secretive past, and the two become fast friends. As their relationship grows, they meet and make more friends (as well as enemies), and they grow accustomed to their life together.
However, one man can only run from his past for so long, and it isn't long before Kenshin is forced to face the life he thought he'd left behind. Now, together with his friends, he must fight the ghosts of his past if he wants the people he loves to have any kind of future.

Contains a side story called Yahiko no Sakabato.

Lady Celia Davenport has been abducted, sold into slavery, and now finds herself in the bed of an Infidel lord. If she gives him erotic pleasure with subservient eagerness, there is a glimmer of hope in her future. Anxious to escape, she finds that perhaps sexual servitude isn't the prison she once imagined. Besides, every time she gives her lover satisfaction, she receives a rare and valuable pearl as a reward.

During a long drought, a runaway boy comes across a flying mountain, carried around by a gigantic turtle that only he can see or hear.

From MangaHelpers:
This volume is a collection of short stories. The title story "Aka no Sekai" features a boys' summer camp out in the country. The main character, Regulus, is reluctantly attending the summer camp, where he shares a room with a cheerful boy named Milan. Soon after arrival, though, some of the other boys begin acting strange, while claiming they want to see the color red. Will Regulus and Milan be able to figure out what is happening before it is too late?

Despite being half-brothers, Robert and Emile met each other just three years ago when they both started working for the Emperor. Robert is the Captain of the Royal Guard despite still being 17, while the younger Emile is a member of the Guard.

But things never go smoothly for the newly-united brothers, because the Emperor is always willing to throw troublesome jobs their way...

When humans first discovered fire, it filled them with fear. As time passed, they mastered fire, and used it to melt iron and forge weapons. This taught them to build their power, make war and rule one another.
Follow the journey of Akoya, a young woman protected by a mountain spirit, as she fights for survival in Japan long before the samurai came to rule.

From Viz:
Deep in the heart of 19th Century London, a young nobleman named Cain walks the shadowy cobblestone streets of the aristocratic society in which he was born. Forced to become an Earl upon the untimely death of his father, Cain assumes the role of head of the Hargreaves, a noble family with a dark past. With Riff, his faithful manservant, and Mary Weather, his 10-year-old adopted sister, Cain investigates the mysterious crimes that seem to follow him wherever he goes.

Genghis Khan was the greatest hero in human history. This story illustrates the miraculous events in the breathtakingly vibrant life of this man who tore across the steppes, awash in turmoil and war, as the ruler of his people! This is an authentic historical novel depicting Genghis Khan's sweeping military rule from his childhood onward!