This manga follows the unfortunate life on an extraordinary swordsman - Inoko Gennosuke.
Gennosuke was born in a social group called 'buraku' that was considered to be the filth of society, and because of that he was forced to live a life of misery.

Note: Cover image is from the 2004 reissue.

A four-part manga series depicting the events previous to the American movie Cloverfield (more info in the link). In the manga (more info in the link), a connection is implied between the human protagonist Kishin, his mother, and the creature.

Clannad is set in a high-school located in a Japanese town. Tomoya Okazaki is a third-year student who doesn't take his studies seriously. Always late for class, he's seen as a delinquent by the rest of his classmates who are busy preparing for their entrance examinations. Needless to say, he doesn't have too many close friends either.

Tomoya seems not to mind too--until he meets a few other girls from his school. Though he doesn't care much about them at first, he soon opens his heart to them as they get to know each other better.

Clannad is a romantic youth drama that's likely to be more down-to-earth than Key's other works. But like Kanon and Air, Clannad's story is expected to be another touching and heart-breaking weeper.

Based off the game of the same name.

Volume1
1) Choumaru
Choumaru is a beautiful, smart, and arrogant playboy who dumps every girl he has unsatisfactory sex with. Currently he's living with Shina with whom he also has casual sex, but what he doesn't know is that his roommate wants more from him.

2) Angel

3) Rocker Motion

4) May Be Blue

5) The Cherry Blossoms Bloom

Volume 2
1-4) Scene 1, 2, 3, Last
Continuation of Choumaru. Shina brings home a kid to look after while his photographer friend is away. However, there seems to be many after this child...

5) Born

Tsurebito is about the people who escort you from purgatory into the world of the dead. After you die you must go through your personal gate into the world of the dead, and escorts are the ones who lead you there.

The normal meeting inside the normal life. The slightly special destiny that becomes entwined inside it.

There's a German legend that says if a person sees their own doppelganger, they will die soon. Fran is a sickly girl and so her parents pay her extra attention. This makes Fran's brother Cole jealous since he feels neglected. Cole decides to take advantage of the legend to manipulate the situation to his favour.

From Viz: Delve into the tortured past of Earl Cain C. Hargreaves, charismatic heir to a wealthy family full of secrets, lies and unthinkable crimes. The prequel to the Godchild series, The Cain Saga follows the young Cain as he attempts to unravel the secrets of his birth, all the while solving each new mystery that comes his way.

It happened after school one rainy day... A group of friends have stayed behind to prepare for the next day’s school festival. One moment they are idly telling ghost stories but the next an enormous earthquake strikes and the entire school seems to fall down around them. They awake to find themselves trapped in a parallel version of their school. A school abandoned and disheveled and whose calendar dates back to 1927. Can they find a way out of this nightmare or are they doomed to the same fate that befell the other victims whose corpses that lie numerous throughout the school?

With their school shutting down for good, the students of a small town were heading for different directions in life. For Minase Tamaki, who was staying in town to find a job, it might be the last time she sees her crush Shindo Yuuma, who is moving to the city to attend a new school. She asks him to do a little prayer that is supposed to help people cross paths again even if they become separated. But her classmate, Yuzuki Erina, overhears their conversation and, out of jealousy, decides to ruin her plans by inviting their entire class on what was supposed to be an intimate spell. As soon as the charm goes off, the ground splits in half, swallowing the entire class and, when they wake up, they find themselves in an old school campus. Unable to find a way out, they wander the corridors, trying to figure out where they are. But it seems that the building isn’t as abandoned as they thought it was and, in fact, something evil is lurking in the shadows.

The story takes place in a circus in Paris in the 1970's. Much is made of the romance of the circus atmosphere, of flying through the air on a trapeze etc. We're talking about Old World riffs on the romance and tawdriness of the ring. There are no elephants in tutus walking on their hind legs in this circus; but there are slit-eyed jugglers, daring death-loving trapeze artists and sad Pierrot clowns; though the Pierrot clown - our hero, Torinosu (a.k.a 'Bird's Nest') does have a false red nose.

The tawdriness comes from the circus master pimping out his performers to anyone willing to pay. Decadence is strife throughout the tale - ghosts who wander into the action looking like teenage girls even though they're actually the hero's brother; abandoned neurotic women with a thing for inflicting pain; buracon and possible murder, not to mention mountains of unspoken pining and a hero who looks about to perish at any moment from terminal angst.

From Hyper Parfait:

Kuchiki, a flutist, was plagued by nightmares every night that forced her to seek the help of counselor Matsuzaki. Ishikura, a police inspector, unexpectedly discovered a headless mummified body in an empty apartment and is now on the case. When Kuchiki regains her lost memories, the curtains also opens to a tragedy!

From Yen Press:

Rescued from the darkness by Xeno, a mysterious swordsman, Claudia the Rose Witch is the foundation of the Crimson-Shell, a special division of the Red Rose—an organization aiming to capture the results of one mad scientist’s experiments, the deadly Black Roses. But when Xeno’s loyalties are called into question, will Claudia be strong enough to believe in her dearest friend? And what is the color of the rose blooming in Xeno’s heart—a deep, passionate crimson…or a traitorous jet-black?

The people of Earth live in a society where vampires aren’t just real but dangerous. Although humanity has been able to keep them under control and even take the night away as the vampire’s natural habitat, some of them have adapted. Hesperides, a relatively new breed of vampires, have adapted over hundreds of years in order to be able to go outside during dusk when the sunlight is at its weakest and feast on humans. Aburaya Shiro, a high school kid, lives in a town where there has not been a vampire attack in years, but adults keep warning them of going outside at dusk. Shiro and his classmates take this warning lightly and head out at dusk only to find out one of their classmates who they thought they knew well turnz out to be a Hesperides. With all his classmates violently murdered, the only way Shiro was able to survive was with the help of a different classmate, Ichijoji Eruka, who doesn’t seem to be human herself.

From DVD Asia.com: Left to the naive but good-hearted high school girl Cha Young-mi's own devices after the tragic loss of her parents, Young-mi is determined to overcome whatever hardships the future may bring in order to complete her education. Through the help of an invisible benefactor who pays for her tuition fees and other necessary expenses, Young-mi is able to finish her studies and is offered her dream job as program writer for a radio station. It is there that she meets and falls in love with her colleague Kim Joon-hoo. After Young-mi discovers a desperate message left behind by the former owner of her computer she decides to do something to help this heartbroken person …

Manga adaptation of Dante Alighieri's classic work "The Divine Comedy".

From Eclipse Scans and Evil Flowers:

Hyobi is a famous teen star on TV who lived her whole life as her mama’s doll. Suddenly, Hyobi’s mother decides to send her back to high school on a whim. Hyobi’s kinda lost in all this and she doesn’t have a single friend at school. Then she meets this girl name Soyule, an outcast of the class, and her childhood friend Chanbi. Now, Hyobi feels drawn to Soyule and Chanbi for they don’t know who Hyobi is outside the school…

From Tokyopop: Shirou's ordinary life as a poor construction worker gets turned upside down when he comes across a naked girl, Lucy, who's fallen out of the sky! Her strange and unique personality entices him and he introduces her to his apartment buddies. But after leaving for just a few minutes, he returns to the apartment to find Lucy gone, all his friends slaughtered and an ogre-like stranger standing amidst the carnage. The big man suddenly pulls Shirou out of the apartment building just before it explodes! Shirou gets pushed down into the sewage system of the city and is saved by a mysterious man...

From Chibi Manga:

Let's get into a time machine and return to that time.
Where it was always fun and you were always laughing, to that time...
"I only have three more months to live"
Yui who just transferred to a new school in the countryside becomes Ryo's classmate. Yui who is suffering from an illness has a "wish" that she can't tell anyone, but Ryo wants to grant her that wish but…
After death, reality hits Ryo and Yui.
This is the story of the eternal promise that was made by the two of them.

From In the Water: The continuation from Deep Love - Host. This story is about Reina, a cheerful 19-year-old single mother. During Ayu's Story, Reina was raped in a Karoke bar and eventually gave birth to a baby girl she named Ayu. Now, Reina has fallen in love, but when she told him she had a child, he dumps her! And what's worse is that her daughter, Ayu, accidentally falls down the stairs and during the surgery she becomes blind! What will happen to this once very cheerful mother?