From MangaHelpers:

There's a new transfer student in school named Midori, and she is very cold and set apart from everyone. For some reason, though, everyone seems interested in her. One day, Ao witnesses proof that she is a supernatural being, and confirms with her that she is actually a god. He carelessly asks a wish of her, like people have been sending to the popular "God mail" address that's suddenly been going around school, and she grants his wish. Unfortunately, the cost is high. She kills him-- only to bring him back as a shinigami (death god).

Now, Midori informs him that his job is to show up where people are going to kill themselves and die in their place. Ao feels the pain of each death, though, so it's not something he wants to repeat over and over. For that matter, ending a person's single suicide attempt doesn't necessarily mean that he has done anything about the reasons they were willing to take that step. Will Ao find a way to cope with his painful new life? [tethysdust]

From Bamboo Garden
Five individuals, 24 years old. Their first memory starts in 1994, and it all revolves around a mysterious crime that occurred... Will they be able to escape the dangers?

From Viz:

Orphaned on the mean streets of Treasure Town, lost boys Black and White must mug, steal and fight to survive. Around them moves a world of corruption and loneliness, small-time crooks and neurotic police officers, and a band of sadistic yakuza who have plans for their once-fair city. Can they rise above their environment?

Won the Best U.S. Edition of International Material - Japan for the Eisner Award in 2008.

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. Follow the young Cain as he attempts to unravel the secrets of his birth, all the while solving each new mystery that comes his way.

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In the Hakushaku Cain Series:

1) Wasurerareta Juliet

Includes 2 oneshots:
i) The Boys Who Stopped Time -
England, year 1918. Rupert enrolls to his new school just a few days after the murder of a maid called Noelle. He's the type that just can't sit still, so when he meets Noelle's sister, he's determined to help her find out who murdered her sister...

ii) Double -
When they were children, Ren helped his friend Emilio start his career as an actor. But when Ren didn't have any news from Emilio for two years, he decided to go to New York to look for his friend...

2) Shounen no Fukasuru Oto

3) Kafka

Includes 1 oneshot: Ellie in Summer Clothes

4) Akai Hitsuji no Kokuin

5) God Child

Nimi's time stops as she struggles to confess to her childhood friend Taku. But what caused Nimi's time to stop, and will she ever leave this cozy existence?

From Cave Scanlations:

From a forgotten tale passed down in a small rural village comes a warning to not look back when it's dusk. If you do, you may spy Komachi, a young, doll-like girl dressed in a bell-adorned kimono waiting to lead you through a gate that lies within a crack between the world's dimensions. She draws you to a very special antique shop, Kaijidou, where "Origins", the memories or feelings that reside within ancient objects, are bought.

Ariyuki is standing in front of his former home which happens to be destroyed by a meteorite. Among the ruins he finds a gem which frees a young girl. The girl claims to be a god and is willing to grant him his dearest wishes.

AF begins his second year of high school, depressed over the mundane nature of his life and his inability to find himself. The strange thing is, whenever he is depressed, AF always starts seeing three strange little things flying around him. No one else sees these oddities, and aside from their occasional presence, his life remains incredibly ordinary…That is until he meets Sane, a girl who suddenly asks him to teach her how to play guitar, and a strange middle aged man that speaks to AF about the difference between reality and dreams. From that day on, AF starts experiencing strangely real dreams, but they are still just dreams…right?

Once upon a time, there was a boy who was bullied by his peers because of his honest, straightforward personality. This boy was befriended by a brother-and-sister duo who vowed to be his friends forever. Unfortunately, the boy's family moves away, leading to their fledgling bond being severed.

Years later, the honest boy has found the perfect way to make 'friends,' be admired by students and teachers alike, and avoid being picked on: maintaining a false personality as the "School Prince" while carefully hiding his quarrelsome, devil-may-care attitude from the public eye. But his peaceful - albeit mind-numbingly boring and somewhat lonely - days are thrown completely out-of-whack when a pair of twins transfers into his school.

Roma is a mysterious girl that is on a mission to collect “human greed” through the use of various magical objects that have unique powers. When humans use these magical items to satisfy their own personal emotions, such as love, their greed level increases and Roma is able to steal their excess greed.

The people that use Roma’s objects seem to always let their greed destroy themselves, putting themselves in a worse situation than before.

Note: This manga is not completely scanlated into English. Due to a chapter numbering error, chapter 6 was incorrectly indicated as having been scanlated by Simple Scans. It has actually not been scanlated. However, all other chapters (including the final chapter, which should be numbered 25 and not 24 as seen here) have been scanlated.

The year is 1949. Crushed by the Allied Powers, occupied by General MacArthur’s armies, Japan has been experiencing massive change. Agricultural reform is dissolving large estates and redistributing plots to tenant farmers—terrible news, if you’re landowners like the archconservative Tenge family. For patriarch Sakuemon, the chagrin of one of his sons coming home alive from a P.O.W. camp instead of having died for the Emperor is topped only by the revelation that another of his is consorting with “the reds.” What solace does he have but his youngest Ayako, apple of his eye, at once daughter and granddaughter?

From Tapastic:

To every death, there is a reason. Behind these deaths, there are "Architects" who plan and design them. Follow Gunho, a Death Architect, and his group as they design masterpieces...

A compilation of 8 stories:
Girlfriend in the Sky
How can a girl get her boyfriend to hold hands with her?

Ankoku-san
A pop tale about a girl full of negative thoughts.

Kami-sama Make-believe
A girl watches over the town she lives in, believing the world is going to end. Soon she is joined by a boy who has no place to go, and they watch over the “last days” of the world together.


Downtown Train

Harumage.

ekstasis
A silent story about what might happen if a boy could freely touch the hair of his beloved.

Ao

After School Show
Two classmates discuss calmly if and how much they love each other.

Haru, a fun, lovable, easygoing guy, has a problem, he nearly burnt his girlfriend to death with his power. Meanwhile, another serial arsonist is on the loose, and there are rumours of strange incidents having occurred before! Could there be more people with unexplained powers? What will happen to the human torch?

Still in her early twenties, beautiful Toshiko Tomura has won the Akutagawa Prize for her story “The Book of Human Insects.” The great honor is not her first: she has previously won the New York Design Academy Award, before which she was the lead actress of an established theatrical troupe. Yet, while the media go abuzz, the woman in the limelight slips away from the metropolis; what the sole paparazzo who manages to trail her to an abandoned country house witnesses is an immobile figure of an old woman and the star herself, naked, in a reverie as bizarre as it is erotic…

Wandering the packed tunnels of Shinjuku Station, famous author Yosuke Mikura makes a strange discovery: a seemingly homeless drunk woman who can quote French poetry. Her name is Barbara. He takes her home for a bath and a drink, and before long Barbara has made herself into Mikura's shadow, saving him from egotistical delusions and jealous enemies. But just as Mikura is no saint, Barbara is no benevolent guardian angel, and Mikura grows obsessed with discovering her secrets, tangling with thugs, sadists, magical curses and mythical beings - all the while wondering whether he himself is still sane.

An adaptation of the BBC re-imagining of Sir Arthur Conan Doyle's Sherlock Holmes series.
Sherlock, which aired in 2010 (season 1), 2012 (season 2) and 2014 (season 3). Season 4 is currently in the works.

In the series:

Vol.1- Pink Iro no Kenkyuu
(A Study in Pink)

Vol.2 - Shi o Yobu Angou
(The Blind Banker)

Vol.3 - Ōinaru Game
(The Great Game)

Even though J no Subete is three volumes long, each volume is a dynamic story in itself covering a particular stage of J's life. Her life is a dark story and it's a very psychological manga.

Book one is about all of J's trials and tribulations throughout childhood, during high school as she tries to find her place in the world and when she meets the somber honor student Paul...

Timeline (from Oriolidae & Sparviero):

01 Barairo no Hoo no Koro v01 ch01-05
02 J no Subete v01 ch01-05
03 2 Shuukan no Adventure v01 ch05-06
04 J no Subete v02-03
05 Barairo no Hoo no Koro v01 Extra

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Lezhin publication

From Tapastic:

Vampires rule the night taking the blood of those they desire. Humanity's only chance of defeating them is to restore the long lost Original Werewolf. Join in the fight between werewolves and vampires to save humanity, to save the world.

Simon, once brilliant law student at the prestigious Haversford Campus, now finds himself council for those in need of representation against the occult. It's the age old Faustian tale, but this time, Faust has a killer lawyer.