From: Shinnen There are rumors of a grand treasure located within the local museum of Ashiwara and that this treasure requires a special key to unlock. But no one seems to know what this treasure is or even what the key looks like. But Kei and Hikaru, two childhood friends, may inadvertently find out when someone seeks to claim the treasure for themselves and that action plunges their world into chaos.

From Loyal Kiss: "Supernatural things don't exist in this world!" Kahou Mira absolutely hates all things supernatural, so why does Hikaru-sempai keep pursuing her to join the Supernatural Research Club?! But one day, Mira barely escaped the clutches of the White Rose Academy vampire, Rose. Now, she had no choice but to join the Supernatural Research Club with Hikaru-sempai for help! And they unravel much more about Rose they never knew before...

Kurôzu-cho, a small fogbound town on the coast of Japan, is cursed. According to Shuichi Saito, the withdrawn boyfriend of teenager Kirie Goshima, their town is haunted not by a person or being but by a pattern: uzumaki, the spiral, the hypnotic secret shape of the world. It manifests itself in small ways: seashells, ferns, whirlpools in water, whirlwinds in air. And in large ways: the spiral marks on people's bodies, the insane obsessions of Shuichi's father, the voice from the cochlea in your inner ear. As the madness spreads, the inhabitants of Kurôzu-cho are pulled ever deeper, as if into a whirlpool from which there is no return... - Viz

From Storm in Heaven: In the town that Takada Chinatsu moved to, there's a legend about demons called Tsumitsuki that possess the feelings of guilt a person has over their sins. Those who are possessed are slowly devoured, body and mind, as the demon manifests. As one of Takada's friends starts acting strangely, her classmate Kuroe steps in to help... but his true motives are hidden behind a mask.

It’s the early days of the Showa Era. In a really ordinary-looking and peaceful city, no one notices the strange things that are happening. Shinobu, a young man who manages his father’s second-hand goods store, comes face to face with one mystery after another. At some point, these events lead to a story…

It is the fate of the Hirasaka family to protect a barrier underneath Tokyo that separates the human world from the demons of another world. One day, an incident in the underground tunnels claims the lives of 6 civilians and a Hirasaka. The mass death and the mysterious circumstances under which it occurred have been hushed up by some powerful, but unknown, people. These people seem to be dismantling the barrier the Hirasaka family has fought so hard to protect, and it is up to the remaining Hirasaka to stop them. From Anime News Network: The story revolves around an underground barrier beneath Tokyo that separates our world from the evil spirits of another world. For centuries, the Hirasaka family has been entrusted with protecting this barrier. Within the past ten years, a conspiracy of unknown parties has been dismantling the barrier, piece by piece, and the future of Tokyo rests in one man who vows vengeance.

Tokage, a soul cursed to forever wander the world, unable to rest nor to join the reincarnation cycle, is now looking for its release. This time Tokage enters the body of a newly dead girl named Yuuka, a shrine maiden. This body requires continual recharging from a highly spiritual person, whom the dead person must have had an attachment to. This person is Shinobu, a younger boy, who also lives in that shrine. Thus starts the adventures of Tokage and Shinobu in a world gone mad, amidst the chaos and carnage that gravitates to an unsent soul draw.

From A Duck's Paradise: Doppelgangers. Mice that take the form of humans. With murderous intent, the look-alikes and the originals are both pressured to fight in their own ways. After an ambiguous event in their life, Jin-Uk and So-Hee's love life has been shattered. While trying to reconcile with her, Ji-Suk meets her look-alike, and that's how this story starts. What will he do when he, too, has a look-alike destined to kill him? And what's the secret So-Hee will never tell?

Lotus Girls' Academy. A school whose aim is to educate young girls to be pure and modest. Youko is a new transfer student here, and immediately takes a liking to Shuu, who shows her around the school. However, Youko discovers a big secret about Shuu... she's a vampire! Youko then does her best to be the best friend she can be and help Shuu protect her secret... whether Shuu likes it or not! But how does Shuu really feel about Youko... and why does her blood taste so different? And to what lengths will Youko go to help Shuu?

High school student Satsuki Hikawa lives alone in a mansion while his grandfather, who is his only other living family member and an art dealer, travels all over the country. One day Satsuki's grandfather sends him an art book that is called Tablet. Each page in the book seems to represent different tarot cards, but most of the symbols are missing. Soon after receiving the book a mysterious girl storms in to Satsuki's home and claims that she is the owner of the Tablet and tells Satsuki all of the missing symbols must be found and returned to the book before "they" make any mischief. In order to find and return the symbols, Satsuki must call out the right symbols to defeat the escaped ones. Any symbols that he returns to the book will become his servants. Will Satsuki be able to find and capture all of the symbols that ran away?

Dark fantasy story follows a boy named Muoru who has been falsely arrested and sent to a cemetery to perform forced labor. There, he calls himself the "grave keeper" and meets a beautiful girl named Meria. Muoru becomes fascinated with Meria as he spends his days digging a hole containing the undead monster named "The Dark."

Shiina Atsushi, a Japanese-American boy, lives in Japan during WWII. He comes across a Chinese girl, collapsed among the debris of a collapsed building, with a strange glowing symbol on her back. She claims she's from another world that has been destroyed. As she attempts to leave, the military arrive and demand she go with them. Who is this mysterious girl? What will young Atsushi do? -Please read at Entropy's website

A serial-murderer is on the loose who just so happens to also be removing the hearts of his victims and taking them with him. His victims however, are not merely random humans as thought by the police. They are in fact, the past and present guardians of the gateway of the afterlife. On the day he is to be married, Detective Kanzaki, who happens to be on the case, discovers that his fiancé Mina has been murdered with her heart also missing. He also learns that the killers are Kudo, a geneticist, and his evil secretary Rei. The two are trying to obtain six hearts from the guardians so that they may call forth a horde of demons from the Gate of Rage and have their every desire granted. Only problem is, once they open the gate the entire world will be covered in darkness. Meanwhile, in the afterlife, Mina encounters Izuko, the Guardian of the Gate. Izuko gives her three options: Mina can choose to ascend to heaven and be reborn, she can choose to forever walk the earth as a ghost or she can choose to curse one of the living to death and as a result be cursed to descend to hell. Mina has 12 days to make her choice. - Wikipedia.

From Aerandria Scans: Etou Ageha is the successor of a family that have been doll makers for generations. Everyone in her family has a special ability - to be able to hear the voices of dolls. With the two guardian dolls, Leo and Yuki, Ageha should be able to become the true leader of the family, but due to some complications, Yuki was lost a long time ago. And thus, our heroine is on a quest to find the lost doll, while accompanied by the other guardian doll, Leo...

From Fate: Abe no Masahiro, grandson of the famous Abe no Seimei, is always looked down because he could not see spirits. But he saw them when he was younger? After some unexpected occurrences, he can see spirits once more and must try to prove to himself that he isn't just "Seimei's grandson" with the help of Mokkun, the so-called mononoke.

Sadao, a graduate of a low class college, finds himself surprised that he was moved to a different department in a high level office building, located on level B2 (basement level), of the building. Upon entering his new office, he encounters a miko, and is told by his superior to follow her. He follows her and finds a man about to rape a woman, but the miko, named Ichiko, enters the scene and purges the man. A spirit exits the man, and things are back to normal. According to Ichiko, the number of sexual harassment and rape cases have multiplied by 20 times over the past 3 years! In order to do so, Ichiko is to reduce the number of such cases and prevent chaos from occurring by purging these souls that affect the minds of humans. Sadao was believed to have potential to fight against these souls, which is why he was moved to that department. So what's the secret to her powers? Read and find out!

July 2005. There is a series of mysterious homicides happening in the blazing city, Tokyo. All the victims were women and the cause of their death was traumatic shocks. Judging from abnormality of these incidents, there are reasons to believe that they have something to do with the occult. In order to make clear the direction they should take, the metropolitan police department decided to carry out their investigations by engaging the help of those influential figures of the occult world. July 21st – the metropolitan police department officially labeled this incident as the No. 568 Specific Crime.

Young Akira has a destiny: He's a shiki tsukai, a warrior with the magical power to control the seasons. He also meets the beautiful Koyomi, another warrior, who is sworn to protect him. For there are evil forces intent on destroying Akira - and the entire universe!

A story of a vampire who might disappear like smoke and a girl who loves money.

From Shoujo Manga Maniac: The Song Dynasty: Shan Yu Mu, an artist who can see and paint the future, is driven out of his village as a heretic… Haunted by visions of countless disasters, he wanders and encounters the innocent and spirited young lady, Chuei Ying Shuang! After a terrifying prophecy, these two who were strangers step on a path toward an uncertain future. Will their path be blessed or cursed? The only certain thing is that they will walk that path together…

There was a western style house buried deep within the forest... something terrible happened, and for those who thought they died inside, this was only the begining!

From Aerandria Scans: Meet little Lulu - a vampire girl in whose right eye flashes crimson sparks, and the giant Gau. There are three places in the human world that made them who they are now - “the school,” “the church” and “the hospital.” What happened to Lulu when she was still human and how did she become what she is now?

14-year-old Eriko finds herself left in charge of her younger brother Daigo when their parents suddenly disappear one warm summer evening. Trapped in a world that is very much like their own save for the lack of their parents, Eriko and Daigo find themselves desperate to return to the worrywart mother and apathetic father they never thought they'd miss so badly...

From Bliss: While trying to find a job, Manji, a for-hire bodyguard, also known as "Akainu (Red Dog)", meets Karu who works for "CARDS". Discovering that Karu's mission is to exterminate the deadly "TOYs", which mindlessly attack any living things, Manji can't help but forcefully tag along to relieve his boredom... Edit: Officially a Shoujo manga, though the artwork and action seems to differ.