From StarryHeaven:
Ema is obsessed with ghosts, and is even part of her school’s occult club. She’ll do anything that has to do with some crazy superstition about ghosts or spirits, and make sure that she goes out of her way to do it. Ema is known for this at school, and the series follows her pursues to find ghosts. Ema, unfortunately, cannot see the things that she loves, unlike a few of her friends…

Included one-shots:
Volume 1: Shuugaku Ryoko no Susume
Volume 3: Time Capsule and Happy End no Tsukurikata

*Scanlators stopped because of lack of interest in chapters 2 and 3.

From: Easy Going Scans

If you could find out a little something about the future, what would you do? Get rich off of the stock market? Use the media to become famous as a prophet? Or…

Seducing the guests to make them pay the most, that is the job of a host. Takashi, currently the No. 1 host, is an apparent professional when it comes to being a host. Being a host isn't Takashi's only job. The Persona XII, guided by the stars are to preserve the balance of fate. The eyes on an assassin serves the guidance of the stars.

Satsuki Kakeru lost his sister by suicide and has been living a dull life ever since then. One day, he is transported into a bizarre world "Red Night" along with his friend Minase Yuka and six other classmates. In order to survive and escape from Red Night, they must defeat six black knights in order to return home.

Humanity, having faced extinction at the end of the 20th century, would not have entered the new millennium if it weren't for them. In 1969, during their youth, they created a symbol. In 1997, as the coming disaster slowly starts to unfold, that symbol returns. This is the story of a group of boys who try to save the world.

Won the Kodansha Manga Award in the category "Best General Manga" in 2001.
Won the Seiun Award for Best Comic in 2008.

An art college students moves in Venice to study, she starts to live in her new room, part of an old huge historical mansion and she discovers a new world of secrets linked to her young, mysterious landlord. A gothic romance story and a vampire tale which flows around Venetian laguna and roman museums; a manga rich of suggestions and images with a passional storytelling, a deep noir drawing style and melancholic mood. From Italians to Japanese. This was created for Kodansha, published on Amie. You read it Japanese style.

Kazao is happy with his life on Mirai ("Future") Island. Sure, his parents abandoned him after he was born, leaving him to be raised at the orphanage-like facility, but his life is comfortable and has his friends, especially the lovely Eiko, the girl he loves. One night, however, he has a horrible nightmare where he sees himself die in a motorcycle accident. After that, everything changes. The next day, his parents are miraculously "found" and he is torn from his idyllic life and Eiko's side to be thrust into a world he knows only from television shows and school assignments. Dropped unceremoniously in the middle of a city with only a sketchy map for guidance, Kazao is saved from wandering aimlessly in search of his new home by the cute and forward Yuu, who turns out to be in his class at his new school as well. Despite his best efforts to accept his parents' sudden return and Yuu's friendly overtures, Kazao can't shake the feeling that things aren't quite right. Nor can he forget Eiko. Why did his parents wait sixteen years to call him back? And why is the piano the only used piece of furniture in his parents' new house? The mysteries begin to pile one atop the other as the lies fall apart in this intriguing story of future possibilities and innocent romance.

There is a mysterious group of people who inflict cruel and fatal games on people for their own amusement. Tatsuya and Misa are out on a date in an amusement park when they wander into one of these horrific competitions on the tallest roller coaster on earth. The seats fall out of their 12-person roller coaster car, and they are told that the game will end when all but one person has fallen to their death. Will the passengers be able to find a way to escape the competition? Will there be any retribution against the orchestrators of this sick crime?

Satou Atsushi isn't neglected by his family so much as ignored completely. Left to fend for himself, Atsushi fails to learn human speech and instead learns "cat language" and "Dog language" from the family pets. When he's eventually socialized with other children, his speech is stunted and his social graces leave something to be desired. But on his first day of nursery school, he meets a gloomy blonde with the same last name who seems to be a safe enough choice in a first friend. After developing a rather sizeable fixation with Satou Manato, he finds out that there his first friend is seriously ill and has a twin; Shuuto.

Years later, two other friends begin school and find that there are two Satous in their class too. Two Satous who, at first glance, could easily be mistaken for twins, but there's a bit more to things than it first appears...

A graveyard in contemporary Israel has an unlikely visitor. The elderly gentleman from Japan, a former news correspondent, lays a bouquet of flowers at the tomb of one Adolf Kamil. For he remembers the tale of three Adolfs: Kamil, a Jew who grew up in Kobe, Japan, the son of a baker; Kaufmann, only child of a German consul stationed at that port city and his Japanese wife; and the Fuhrer with whom the Far Eastern nation made common cause.

Won the 10th Kodansha Manga Award for general manga in 1986 (shared with What's Michael?).

A world of supernatural where strong preys on weak. An Earth not just for humans.....and a strange ability!

Undercover investigator Matsuzawa Tomoya has a blood-stained past and hidden abilities. His new suspect, Kiryuu Yuuki, is one who looks exactly the same as the bloody man who has been in Matsuzawa Tomoya's mind for the past 15 years.

The metropolitan police have a special squad of negotiators for talking down violent criminals in hostage situations and so forth. The two top negotiators have great knowledge of human psychology and experience in dealing with criminals, but they are missing something important.

They are searching for someone who is capable of agape love-- unconditional and selfless love for all people. Such a person would be able to develop rapport easily with criminals, and therefore be a natural negotiator. Instead of finding a person like this on the police force, they find her in the form of the teenage girl Haruka. Will they be able to persuade her to become a negotiator for the police?

It is the Heian era (794-1185); Yorimichi is a young onmyouji, the son of a famous onmyouji leader of the imperial court. As a boy, he had been hailed for his incredible talent - but a certain incident during childhood stripped him of all his memories and the ability to 'see'.

Lord Koretaka, once the crown prince renowned for his brilliant mind and steadfast personality, is now in exile - supposedly as punishment for murder. Upon their first meeting, Yorimichi's powers are instantly re-awakened. Intrigued by what he believes to be Koretaka's amazing abilities, Yorimichi decides to swear allegiance to the prince.

From Aerandria Scans:

Karashima is a high school boy with a beautiful voice. So beautiful that he can make anyone do anything, just by saying the words. Because of his potentially dangerous ability, he distances himself away from people but soon finds himself in the middle of various criminal investigations that he can help solve, and a girl named Kokubu who seems to be in love with him.

1) Yurusarenai Otoko

2) Aishiatteru Futari

3) Seigi no Mikata no Koi no Yukue (Love & Battle)
Seigo, who grew up in a village, moved to Tokyo to find a job and to fight crime (apparently he has some strange superpowers), since not much happens in his village. One day his childhood friend Touma visits him and challenges him to remind him of his mission. At least that's Touma's claim...

4) Kanoko's Story

Note: Chapters 1-3 are shounen ai stories while chapter 4 is shoujo.

James Block is a former sports star whose criminal endeavors landed him in jail. In prison he meets "Dr. F", a strange old man who tells James about a beam that can turn living things invisible.

After escaping from prison, James finds and uses the laser on himself. But, because the beam has not been perfected yet, it only rendered his skin invisible, leaving his insides visible to the outside. Angered at his disfigurement, James takes the name "Alabaster" and begins eliminating the hypocrites and the boastful. He is joined by Ami Ozawa, the granddaughter of "Doctor F", who was rendered invisible after the doctor used his pregnant daughter as an "F Beam" test subject.

On their trail is Rock, a vicious FBI agent.

From Viz:
What does it take to find your true inner self? Zen's memory has been wiped, and he can't remember if he's a killer or a hero. And a lot of people will do anything they can to keep it that way.

There's 2 versions, one tankoubon and one bunkoban.

The tankoubon includes:
「暁に立つライオン」 - Akatsuki ni Tatsu Lion (published in Betsucomi, 05-07/2003)
「トルコ取材記」 - Turkey Shuzaizakki (Omake, 06/2003)

The bunkoban version also have the one-shots:
「海に墜ちるツバメ」 -Umi ni Ochiru tsubame
「記憶の足音」- Kioku no Ashioto
Both also present in Umi ni Ochiru Tsubame.

Resume from ShoujoMagic:
Izumi Erina is a senior in high school. She only has one living relative - her older brother Takashi. However, Erina receives an arrest notice for Takashi one day, who is supposed to be in Turkey at the time!! In order to look for Takashi, a mysterious man Sinclair came to Japan and brought Erina along with him. What is the "Black Trap" that awaits Erina in a foreign country...?! A shocking romantic suspense work filled with waves of love and hate!!