Maybe

A young woman, by some strange occurrence, was left to die alone in the former building of Seikyou Academy. Mysteriously, there is one person who can see her in ghost form: Teiichi Niiya, a freshman. Now they both seek to find out the reasoning behind her death, and what could have caused it.

(Source: DBR Scanlations)

Tasogare Otome x Amnesia

Dusk Maiden of Amnesia

黄昏乙女×アムネジア

Katsura, Asuka

Saya, the main character, lost her memory and has been living with her adopted family. Her everyday life seems quite normal, except that she eats a lot more than she actually needs. Then one day she meets a guy named Hagi in a park. She is told that he has been searching for her, for a long time. Since then, her normal life has changed completely.

A high school girl named Saya can not remember anything from her past. A handsome young man, Hagi, appears and something seems familiar about him. This girl is more than human with an ancient and mysterious past. She will hunt down and kill the monsters called Chiropterans.

(Source: MU)

Blood+

Fuyuki, Nea

In a field of green stands a single castle. One night, the residents sense that something is amiss. Suddenly a doll starts moving, and the residents disappear one after another. Thus, a young girl is left alone inside the mansion...

(Source: Square Enix, translated)

Inada, Shiho

Ono, Fuyumi

Mai Taniyama's school has an ancient, abandoned, and allegedly cursed building. Whenever it is about to be torn down, a series of unsettling deaths occur and halt the demolition. To prove it is haunted, Mai and her friends try to summon a specter by telling ghost stories. No ghosts appear, but the group encounters Kazuya Shibuya, a 17-year-old transfer student. Though her friends are charmed by Kazuya's attractive looks and great manners, Mai does not trust him.

Following a mishap, Mai discovers Kazuya's real identity as the president of Shibuya Psychic Research, a group hired by the school principal to investigate the building's rumored paranormal activity. As a consequence of her actions, Mai must temporarily help Kazuya if she does not want to pay him damages. Joined by other individuals experienced with the supernatural—former Buddhist monk Houshou Takigawa, self-proclaimed Shinto priestess Ayako Matsusaki, famous medium Masako Hara, and Catholic priest John Brown—Mai and Kazuya must uncover the mystery surrounding the building before any more innocent lives are lost.

[Written by MAL Rewrite]

Ghost Hunt

ゴーストハント

Ima, Ichiko

Ritsu inherited his sixth sense from his grandfather, along with a demon guardian named Blue Storm. Strange things just seem to happen around these two, and it's left to them to get to the bottom of all these mysterious events. Each story is independent but features recurring characters you'll come to know and appreciate as they, each in their own way, try to deal with things 'not of this world'.

(Source: MU)

Hyakki Yakoushou

Beyond Twilight

百鬼夜行抄

Mizushiro, Setona

Mashiro Ichijou, an attractive and popular high school student, has always lived his life as a boy. However, nobody notices that deep down, he resents the fact that his body is half female. He has decided to conceal his femininity from those around him, while in reality, he is insecure about who he is supposed to be.

One day, an unfamiliar nurse asks Mashiro to follow her to the school's infirmary in the basement—an office that has never existed until now. Little does he realize that the moment he steps into the mysterious room, he will never be capable of returning to being the person he was before.

As he struggles to find his true identity, Mashiro must face the disquiet in his own heart, all while protecting himself from the prying eyes of his classmates. Slowly but steadily, the unbecoming truth of the world is laid bare: all its lies and deceit engulfed in nightmares that only unfold in broad daylight.

[Written by MAL Rewrite]

Houkago Hokenshitsu

After School Nightmare

放課後保健室

Park, Sang-Sun

Meet Pamela, a tarot card reader who helps supernatural beings living in the human world. She'll help anyone, whether they're a love-stricken cat, a vampire spending eternal life running from his one true love, an unattractive waitress looking for the man of her dreams, or even a magician who creates a humanoid doll to serve the woman he loves. Although she is good-natured, there is a deep dark secret that she must deal with before she can move on to the next life.

(Source: Tokyopop)

The Tarot Café

타로카페

Suekane, Kumiko

A story focused on Saya and Hagi's past in Russia in the first years of the 20th century (1910's). 

(Source: MU)

Blood+ Adagio

Blood+: Adagio

ブラッド・プラス　アダージョ

Lee, So Young

Jae is a Korean student who came to Europe to study art. Things aren't going her way, but she's determined to make it. One night, her friend Melissa brings a drunk guy to her apartment and asks if he can stay there for the night. Jae doesn't like it, but agrees. That night she has a dream that the drunk guy drinks her blood...which, of course, turns out NOT to be a dream.

Jae is surprisingly unafraid of the vampire, Michael, and starts to paint his portrait. The two strike an unusual deal: if Jae allows the vampire to feed on her, he will pose for her. His beauty and alluring preternatural energy could be exactly what Jae needs to finally succeed as a painter.

(Source: Tokyopop)

Model

MODEL 모델

Akira

Asami, Yuriko

Usagawa Rinne, a normal female high-school student, spent happy days with her lover, Sakaki Guryuu. However their peaceful days were suddenly shattered. On the night of Sakaki's birthday, Sakaki witnessed Rinne's death after her eyeball was gouged out by a girl named "Gankyuu Eguriko"...

(Source: Wikipedia)

Mushi to Medama to Teddy Bear

蟲と眼球とテディベア

Takeuchi, Mick

Miharu is a very good girl, plagued by very bad luck! Her mother has died, leaving her only a single ring to remember her by, and her father's gone bankrupt – leaving her with all of his debts! Intending to sell the ring to pay off those debts and start a new life, Miharu crosses paths with Rintaro, a "jewelry expert" with more facets than the sharpest diamond. Alchemy, mysteries and gems both cursed and stolen all come together in this glittering series of comedy, horror and suspense!

(Source: Go! Comi)

Kenja wa Nemuru: Shinjou Mimei no Houseki Jikenbo

A Wise Man Sleeps

賢者は眠る―新城未明の宝石事件簿

Hagio, Moto

Bradbury, Ray

An adaptation of eight Ray Bradbury stories.

1. R is for Rocket
A group of boys dream of one day riding a rocket into space.

2. The Screaming Woman
"When you're living on a street like I'm living on, you just don't think awful things are going to happen. Like shooting, or stabbing, or burying people under the ground, practically in your back yard. And when it does happen, you don't believe it."

3. The Fog Horn
The sea is full of ancient wonders, perhaps even beyond human understanding. And once a year, the sounds of a fog horn reach them...

4. The Lake
Even after years away from the beaches of his childhood, the memories of a young man still remain when he returns.

5. Come Into My Cellar
It seems innocent enough when Mary's brothers receive in the mail their order of mushrooms to grow in the basement, but as the day goes on her suspicions rise.

6. Homecoming
Everyone's coming for All Hallow's Eve, which only serves to remind Timothy how much he feels like the family's black sheep.

7. Jack-in-the-Box
Her house is the world; her deceased father, God. Donna is wildly intrigued by what lies beyond those walls even though her Mother and teacher assure her that there's only death. But... what does "death" mean? 

8. The Rocket Man
Doug's father is a Rocket Man, home at last after a three-month trip. Turns out that working in space isn't as wonderful as it seems, and yet it keeps calling him back.

(Source: MAL)

12 Manga Like Hanako to Guuwa no Teller