From The Zero Alliance:

At Seirei Academy, a series of mysterious demonic ceremonies have been taking place and the transfer student, Yuriya Yuuki is suspected by his classmates. One evening, from his dormitory window, Yuriya sees a girl wandering outside and follows her. Once outside, he encounters a book which allows him to summon the demon Belial, whom invites Yuriya to enter into a contract with him…

The pain Korean high school students have to go through... Going to school at 8am and coming home at 10pm...

A young lesbian couple ventures into a love hotel to perform an erotic ritual of black magic.

Zhong Kui, in traditional Chinese culture he was a god who was skilled at dispelling ghosts and other evils. He was born with a fierce and atrocious face. While he was quite ugly, he was also brilliant, outspoken, and tenacious. This story is not entirely based on tradition. It folows Zhong Kui through a fantasy world of ying and yang.

Nanri Ryusuke has transferred schools three times this year because of his parents’ divorce and he is determined to make a good impression at this new school because it appears that he's staying for good this time. However, his seat is in front of the weird girl in the class, Fujimori Miya, who claims she is a witch and who everyone in the school avoids. Miya, for some odd reason, takes a creepy interest in Ryusuke and makes him the subject of all her crazy experiments and spells.

The series is on hiatus since late 2012 due to the author's health issues.

The series contains 2 volumes;

1) Vartrag Tale
Ralph can see angels and demons. When he was five years old he came across the winged demon Valafar and was completely charmed by him. He made a pact with the demon in order to make his wish, to live with Valafar, come true. Seven years must pass, and there are two conditions that must be met for the pact to be fulfilled. Can the older Ralph discard his ties to humanity and fulfill the pact...?

2) Vartrag Tale - Korumajou no Shitsuji
The story of Valafar's ever-faithful butler, Belta.

Chiyo meets a wealthy nobleman who seems to be the grim reaper.
A story about being able to save people who are destined to die.

From CMX:

Madoka is a high school student who is recruited by Nabeshima ? the guy in the bunny suit ? to work for the GSG (Gokuraku So Gei, a transportation service to heaven). Nabeshima is just way too busy, and since Madoka seems to have the power to see lost souls, he's recruited to help lighten the workload. Madoka is given the job of transporting wandering souls to the afterlife ? on motorcycle! But many of the dead are reluctant to leave this world, feeling they haven't accomplished everything they should have in their lives. Madoka must assist the deceased in performing tasks that will help them finally feel closure and make them willing to leave everything behind for good.

Includes a side story called Sweet Medicine in vol. 4.

The "self bully" Ban has a normal enough life, and where divorced parents aren't that uncommon, her life becomes shadowed in mystery when her mother, Eun-Joo, suddenly brings their "distant relative" Jin-Whan home to live with them. Ban’s mother would always avoid the topic of her family, so who is this strange boy? Are they really relatives? What torturous secrets does her mother's past hold? And what do the sudden strange happens that follow in Jin-Whan's wake mean? Would a better question not be who is he, but what?

A veterinarian who can talk to animals? Even better that he uses his gift to educate pet owners.

Josh is a 15 years old Bully who have been expelled from his highschool for hitting a student who threatened another student. Thereby he was thrown out of the house by his mom. Now he's trying to get into a federal agency named The SCB.

From CPM:
The Devil's Castle was a dark and somber place, until the good-hearted apprentice ASARELLA stumbled on it in a goodwill mission, against her master's wishes--the archmage ELIWHO. Things sour quickly, as Asarella was bound with a blood pact to the Devil, KAINEN. Little did she know, the mage harbors a secret love for her that will only complicate her training for the upcoming apocalyptic battle. This sets up the most unusual love triangle of all space and time.

When Yuna Lee's mother moves to Germany to pursue a music degree, she's left to stay with her father, a university professor, and her three older brothers, who are fiercely overprotective of her.

During her summer vacation, she visits her mother in Germany, where she falls off a cliff and is rescued by Rieno, an 18-year-old knight living in the land of Phantasma. Rieno makes a deal with Yuna: If he saves her life, she must come with him and become the Queen of Phantasma.

After agreeing, she goes back home, only to return to Germany some months later, and is whisked away to Phantasma by Rieno. Now, she must cope with being the Queen of Phantasma, while forgetting the world she came from.

Did you think Masca: The Tale of the Great Mage of Hessed was over? Masca: the Kings is the sequel of Masca, in which Asarella goes on a journey to save Kainen. However, the first two volumes focus quite a bit on the development between Rea and Rakin (Kainen's beautiful ex(?) and another demon king).

N/A

Suzume, the only human in the demon world, works as a journalist in the demon capital city, Ooedo.

Magical rod "Ryin Rod" has been awakened. When the compatible user "Magical Girl Pretty Bell" appears, it always says that the world will be at risk. Milk and Cocoa are angels who protect the rod and support magical girl pretty bell, They have come to the town where a compatible user, Misaki Eri lives, while being attacked by an enermy. However the rod didn't point to Eri but pointed to a body building neighbor, Takada Atsushi. Why did the rod pick Atsushi instead of Eri and why there are two compatible users?

This is a collection of one-shots from Douman Seiman. It contains 36 short stories about serial killers finding love, historical figures brought back from the dead, yaoi fan-girl ghosts making suggestions to the men she watches, and everything in between.

Some time before the June of summer. One day, she suddenly died...

"I" and the corpse of the girl who should have died, "Makoto", spent those false summer days in that apartment.

The relationship between these two sad, distorted people slowly becomes clearer...

From Twisted Hel Scans:
After losing his memories in a traffic accident three years ago, Haru is now living with Kiriyuu, his saviour and legal guardian. But after a school trip where he and his friends wander in an ancient lab, Haru discovers that there might be more to his lost memories than he thought.