"Falna...as long as a Ragtonia lives, the Necromancer will feed off of their life force. He took too much from you. He killed you. But I can give your life back to you, if you'll choose to start living as a Liesian again & fight the Necromancer. When the Necromancer attacked this country, several thousand people were killed. Several thousand more had parts of their bodies stolen. They all became Ragtonia. Kill the Necromancer, release the Ragtonia and free this country from horror & destruction."

From CMX Manga:
This suspenseful, supernatural series tells the tale of Canon, the only student to escape from a bloody vampire attack that took the lives of her fellow classmates and turned her into one of the undead. Struggling against the terrible needs that compel her, Canon commits herself to use her powers for good and do whatever she can to avenge the deaths of her friends and her own terrible fate. Joining forces with a talking, vampire crow, she begins her quest to find Rodd, Lord of the Vampires.

In New York, behind all the hustle and bustle of the big city, Kazuya and Keith execute “requests” in order to live. No one knows about them. But what happens to people who look directly into Kazuya’s jet black eyes…?! For some reason, they start to change, little by little. The much-awaited first volume of a romantic horror between light and darkness.

This series is the sequel of Yurara no Tsuki.

Rasetsu Hyuga is an exorcist who works in an agency where she uses her powers to banish evil spirits.Theres a story behind the red flower - shaped mark on her chest. Left by a powerful demon who said he'll come for her on her 20th birthday unless she finds true love

Yako Hoshino is in this story

In a certain village, in a certain cave, lies a young girl that has been sacrificed. A certain mysterious man comes to her rescue...

(Source: MU)

...unknown

Yurara just wanted to live a normal life, that is to say... a life without needing to worry about ghosts. But that proves to be hard when her current school is filled with them. All of a sudden, she's being targetted by a ghost that lingers over her desk. What's worst is that super popular guys, Meiwa and Yakou, started paying attention to her as well. Between dodging dagger looks from girls and surviving ghost attacks, Yurara is about to unleash her other personality and her true hidden powers. How is Yurara suppose live the normal life that she dreamt of for so long?

Note: Prequel of Rasetsu no Hana

"Yukarism" is the story of a young man named Yukari who is born with the memories of his past life, and so at the tender age of 17, he is an Edo period novelist.
Yukari "meets cute" with Mahoro on the first day of the new school term and even though they've never met before, he has the sense that he knows her...
From there our story of the past and the present begins!

From Go! Comi:
High school tough girl Aria is notorious for taking on her school’s worst bullies. But punching out jerks is nothing compared to what happens when she finds herself inexplicably drawn to the demonically possessed Sakura, a guy who would as readily rip apart his own parents as seek her healing embrace. Sakura says Aria has the power to save him, but will she be able – or even willing to?

Since he can remember, Mikuriya Aki has always been able to open any lock he wants. He uses this special ability to run an underground business, cold-heartedly stealing whatever his clients ask in exchange for a million yen each time. Among his acquaintances are Rin, a nun who can see through anything, Kanbayashi Mitsuhiko, a specialist at gathering information, and Kiwami Ryuutaro, a childhood friend and loan shark.
Also published in Vol. 1 and Vol. 3 are one-shots titled "Meiou Hades" and "Love & Peace". The first is about a boy who is involved in an accident and ends up prematurely in hell where he meets another mysterious guy with white hair and black eyes. The latter is about a substitute teacher who helps a student using her ability to visit the dreams of those sleeping near her.