Based on the PlayStation 2 game of the same name. A teenager who was orphaned as a young boy returns to the city of his childhood. Shortly after transferring to Gekkoukan High School, he is attacked by Shadows — creatures that feed on the minds of their victims. He soon discovers that he shares a special ability with other students at his new school. From them, he learns of the “Dark Hour,” a hidden time that exists between one day and the next, swarming with Shadows. He joins the Special Extracurricular Execute Sector (SEES), and with his new friends, confronts the threat of the Shadows.

After being kidnapped by the cult Gorgom, Kotaro Minami were submitted to a mutant surgery with the purpose of becoming the candidates for the next Gorgom Devil King. Kotaro escaped and turned against Gorgom as Kamen Rider Black.

A collection of stories:

1-2. Kaine - Shinogu awakens from a coma in a hospital only to find out that his black hair has turned red and long. he looked exactly as his famous rock group vocalist twin brother - Kaine. Kaine was part of a group called Endorphines. Apparently someone tried to kill the two brothers off. However in a car accident Kaine died on the spot while Shinogu was in comatose state. in order to let Endorphines continue, their manager forced Shinogu to take over his brother's place, hoping no one will know the difference. Or will they? Kaine's best friend Die already started to suspect the fake-Kaine. meanwhile, one by one the fans of Endorphins began to commit suicide after listening to their latest CD. Die and 'Kaine' decide to investigate and are determined to find the truth.

3. Magical Mystery Tour - When a normal Japanese high school girl wins an all-expenses-paid trip to LA, it really does seem too good to be true...

4. Tokei Jikake no Orange Bakudan (The Orange Time Bomb) - Takumi and Gai are members of the popular band, Orange. When rumors of Gai going solo start to spread, tension rises. And who’s this strange girl that shows up claiming she wants to marry Takumi?

5. Tokyo Top - A continuation of the 4th chapter: the story of how Gai met his girlfriend, Satsuki.

From Seven Seas:

Alice in the Country of Joker: Circus and Liar’s Game continues the adventures of Alice as she goes deeper down the rabbit hole to the country of Joker.

Alice Liddell has now entered a new realm--the country of Joker--where she is reunited with old friends. Yet new challenges abound, as Alice must unravel the mystery of the Circus and the Prison Realm, and deal with the enigmatic Jokers.

This is the first Complete Works set for Ito's works released in the late 90s.

The first two volumes contain thematically linked but self-contained stories concerning Tomie - a beautiful young woman with the power to seduce and dominate any male, from small boys to elderly men. Later, the series leaves these characters behind and focuses on stand-alone gothic horror pieces.

From myobi:

China, early Song Dynasty.

The setting is an era of absolute corruption, when bribery, torture, and threats were the normal way of doing business in the government. Then comes forth a young, new Official - Houjou - who challenges the corruption. Gifted by the Emperor with three beheading devices, he is charged with bringing justice back to the courts.

Based on the historical figure of Justice Bao (Chinese reading of the name), who was said to be an incorruptible official, this is a light-hearted romp through ancient China as he and his assistants work against the corruption that has become the norm in the Imperial Courts.

For more on the historical person and legends surrounding him, see:
http://en.wikipedia.org/wiki/Bao_Gong

From MangaHelpers:
The world is in a war against an alien race called "Mimics," who have taken over most of the world with a mission to eliminate the human race. Keiji Kiriya is a new recruit in the United Defense Force, which is battling against these "Mimics." On his first day of deployment, Keiji and his unit encounter "Mimics" and are all killed... Or was it all a dream? For some inexplicable reason, after every time he dies, he is resurrected and returned back to the day before the battle. Why does this happen to Keiji and how can he escape from this never ending cycle?

Note: Nominated for the Eisner award for the "Best U.S. Edition of International Material - Asia" in 2015.

Tsukasa is a magazine writer who has a sometimes boyfriend Atsushi, a gay porn star. They get along just fine, until Yui shows up, a yakuza from Tsukasa's past! Mix in a haunted house, ghost mystery, yakuza action, and plenty of adorable kitties and you have the latest new story from Miyamoto Kano!

From Half-Baked Scanlations:

Ririko, a stylish Charisma Gal from Shibuya, finds herself playing amateur detective after an unexpected turn of events. She is keen to solve cases to prove herself worthy of elite police detective Nii, a man she adores and regards as her fiancé, but her enthusiasm leads her into a whole lot of trouble.

From Viz:
The business of Death is never done. Asato Tsuzuki works as a Shinigami, or "Guardian of Death," in the Ministry of Hades. It's his duty to make sure that the souls of the dead reach the afterlife, but contrary ghosts and humanity's evils keep getting in the way of a job well done. With all these problem assignments, will he ever get a bonus... or will he be stuck paying back damages for all eternity?

Kyoya Ida is a hard-nosed detective from the Shinjuku Police precinct. He is known in the force as an unreasonable type who would use lethal force to solve cases, making him unpopular with the enlisted and high-ranking officers in the National Police Agency.

Despite this fact, there are some in the force that admire Ida for his bravery and cleverness in using lethal force to solve criminal cases whenever legal means are met in a dead end.

Imagine living in a town where supernatural beings stalk the night for their next prey. Toukei Ibun takes place 29 years after Tokyo was established as the capital of modern Japan. Manzou is the owner of an inn in the town of Asakusa. His friend Hirakawa is a journalist who is investigating the bizarre crimes that keep occurring all over the city in the dead of night.

In a world where dangerous aberrations lurk outside the walls of the last human refuge, Piras, the spoiled and immature son of a war hero, must recover his identity after being classified as a terrorist and hunted down by a corrupt empire. Awaken is an ongoing webcomic.

The story behind the day of Full Moon three centuries ago and the day of Full Moon present day. The story is revealed around the gods and people involved in the incident!

Miyoshi Yoshimune (nickname: Yoshi-Yoshi) just moved to Ikebukuro because of his parents’ work. While exploring his new town with his classmates, Mikado, Anri, and Kida, he hears rumors about “The Headless Rider” and “Color Gangs.” While chasing after these rumors, he gets dragged into a conspiracy involving the whole of Ikebukuro…

Adapted from the PSP game of the same name focusing on a new original character.

Meet Kazahaya and Rikuo. By day, they are two ordinary pharmacists at the Green Drug pharmacy; by night, their boss has them filling 'special prescriptions' for clients with ailments that can't be cured using ordinary elixirs.

A standalone one-shot published by Araki, accompanying the multi-media campaign for his window illustrations on the new collection of the fashion brand Gucci.

The story is about Jolyne Kujo, who goes on a fantastic adventure when she tries to unravel the mystery behind a vintage piece she inherited from her mother’s Gucci collection.

The story is set in a middle school in Shishibone city. Tomohiro Miyajima, the main character of the story, and his group of friends are busy studying for an exam. One day, in search for a thrilling mystery as well as easy money, they take several donation boxes and fabricate a curse to scare everyone: “Ohone-sama’s curse”. After scrawling 骨 (bone) all over the chalkboards and spreading rumors of the curse, the donation boxes are quickly filled and the curse becomes a major legend of the school. Of course, only Tomohiro and his friends knew the curse was fake. It wasn’t possible for anything to happen.

That is, until they receive a donation of 50,000 yen and a letter to go with it, reading: “Please curse Tanashi Miyoko”

Immediately after that letter, bullying and crimes in the school escalated, strange incidents occur, and Tomohiro and his friends are left with a much bigger mystery than they wanted to have, that they are forced to investigate by themselves. What happened shouldn’t have happened. Those who are alive should not be alive, those who know what they know shouldn’t have been able to know, and familiar faces are hardly what they seem, but why? And how?

—Note: The world that this story is set in is the world shown at the end of Higurashi Kai, where Frederica Bernkastel meets Tanashi Miyoko and Miyoko’s parents do not die.

[From FCTranslations]: When Momoe visited her old school, she remembered an event occurred there when she was still a student. Twenty years ago, rumors said there's one man who came to the girls' dorm by night, search for his very own targets, and steal their soul. To find out the truth, Momoe, who teamed up with three other friends, is determined to find this intruder. One rainy night, she found a naked young man near the church, and it turned out he has a lot of connections with the one Momoe is searching for......

In Hong Kong, Nishi is a young policeman investigating a case of strange murders, where the victims appear to have died of fatal blood loss. But the investigation is taken over by a mysterious organization, whose members warn Nishi that he had better not keep on trying to uncover the truth. Some time later, as Nishi wanders in the city, he is suddenly attacked by a monster; but a beautiful stranger saves him.