Kusuda Naoki is a high school student who's lived quite normally for 16 years. But recently, disturbing visions of unbelievable creatures have begun to plague his peaceful - if slightly lonely - life.

Izayoi Takuma is a mysterious transfer student who implies that he knows of Naoki's "true past" and insists that they both possess great power which can only be properly unleashed if they work together. Naoki is confused, remembers nothing, and asks only to be able to return to his ordinary lifestyle.

from fictiondb:
Elinor Lucinda Smith knew it would be difficult to stay calm and professional while nursing Jason Tenby back to health; he was used to calling the shots. Also, she couldn't forget the time years ago when Jason had kissed her passionately... She'd never forgiven Jason for the trouble it had caused. But now he was injured and temporarily blind. For his sake she must keep her identity a secret. However, as she healed him, she tamed him -- and fell for him. All too soon he would be able to see her again -- surely he'd recognize her as the woman whom he'd once considered unsuitable marriage material?

Set in a Japan 500 years after an endless war called Eternity was called to a conclusion by a miracle, people live in The Time after Eternity. A form of Christianity has spread and the Vatican now controls everyday life; people are divided into the "deeply devout" and the "not so devout". Miracle engineering powers the economy.

Ogito, though he is known for being godless, for some reason is taken in as an intern in the Department of Saints in the Miracle Inspections section, partly due to his reading many forbidden books. He is immediately taken off on an inspection where a priest—the head of his three person team—is killed, and Ogito is left only with the priest's weird apprentice Izumi: a man who gave up his life to God to let his heart reside in a puppet.

With endlessly creative art and world-building, this manga is a feast of the unusual and a flowering mystery quickly leaving your preconceptions behind.

From Manga Freak:
Fumiki Shimazaki has only one dream: to become a poet. Spending more time in his poems than in the preparation of it his studies, he faces dissaproval from his professors and his best friend Mika... To escape from the harsh reality, he seeks refuge in an abandoned factory.

There, he stumbles upon a mysterious dog, who saves his life from an attacking monsterous feline. Their friendship is immediately created thereafter.

Questions arise then. From which does this gifted dog come from capacities paranormaux and overflowing of thirst for knowledge? How can it speak? What does the number 23 on its ear stand for? The Appearance and arrival of this dog causes an increaingly number of extraordinary events all revolving around the number 23...

From Fateful Encounters:

Inorihime, Maritza, the noble existence who inherits the “Inori no Uta” [Prayer Song]. At a single chance encounter, she is captivated by Prince Azurite, despite their meeting being forbidden. The two of them are exposed to cruel fate… Now, the love that dwells in their hearts, an unseen door opens!

From Shoujo Manga Maniac:

Duan Cheng Feng's aunt is one of the emperor’s concubines. In order to keep her high ranking status, she gives the emperor a child, but to her dismay, it’s a girl! She tries to convince her family to exchange the female baby for their nephew. In order to avoid it, the young boy’s parents fake a serious illness to make her give up her plan. But she won’t let a minor detail like that get in her way...

This is a collection of short stories that explore the lives of several individuals who undergoes a tragic love tinged with horror and drama from beginning to end as they try to solve the mystery suddenly surrounding them and their loved ones.

From Storm in Heaven:

1-3) Illumination

Twenty-nine-year-old Mikita Ryuuji has been hiding his love for his friend Koya for so long that he can't take it anymore. At his wit's end, he spends one night with Sudo, a man he met at a bar. It was supposed to be a one-night stand, an event he'd forget about the next day with someone he'd never see again. But when Sudo does show up again, this time determined to stay for good, Mikita's life starts to fall apart...

4) Love, or Something

5) Roses, Thorns and a Shattering Clang

6) About Him

7) God's name is Night

8) - extra stories

From Kirei Cake:

After Yune returns to Japan, Alice can't seem to forget about her, so she decides to go visit Yune herself! Each chapter in this series features "quickies" that show the daily lives of Alice and Yune having fun being silly in Japan! Each page links to the next in a sequence of events that help build the story as it progresses!

The Japanese government has launched a brand new law: because of the laziness and apathy of Japan's people it was decided that someone, daily and randomly, will be chosen and killed with a poisoned capsule in order to "bring to life again" and wake up the others.
The person elected will be warned with an ikigami (or death notice) and after this he/she will have only 24 hours left to live.
What will those condemned think and do during this short time?

Note: Was nominated for the Angoulême International Comics Festival in 2009.

From Yen Press:

Nanako and her two best friends, Akane and Shino, have been in the same class since elementary school. Now with the entrance exam just around the corner, the girls have big plans for spending their college years together as well. Unfortunately, those big plans hinged on all three of them passing their exams…Now Nanako and Akane are ichiroh, first-year students at the local prep school. Nanako is determined to do better next year, but it’s going to be a real challenge — the bossy dorm/shrine manager puts the pair to work as miko, Akane can’t kick her video game addiction, and the neighbor’s pranks are getting out of hand! With all this nonsense, Nanako will be lucky to get any studying done!

A boy went to take his trash out late one night, and found a strange, creepy, gothic-lolita-dressed woman sitting amongst the garbage bags. She asked if he had a little sister, and he answered her, hurrying afterwards back to his apartment. When he looked out the window, she was gone. Who is the strange woman, and why does she give him such a bad feeling?

Two high-school girls share an apartment. Fun-loving Yamada Momo loves to spend any money she gets. Serious (yet cute) Madoka Suzuki scrimps and saves all the time. Madoka is saving her money to visit her grandfather in Germany. And Yamada? She wants to buy a scooter! But in the meantime they have to learn to live together. Can they be frugal, yet happy? Will Yamada ever find space for all her manga? Will Madoka ever get used to having the toilet and bathtub in the same room?

Kamizono Academy is a school with an elementary, middle, and high school all within the same campus, and Ayumi is a new student at this enormous school. She is shy and has difficulty making friends, but when she meets wild and outgoing Torako, school life gets interesting as Torako begins to befriend various students within their class.

It appears that the series stops at 6 volumes in 2011. Then the first 6 volumes were reprinted in 2012 with a 7th volume that came out in 2013.

From Intercross
Waka is a 13-year-old Go lover! Learning from her grandfather, a pro Go player, she comes to enjoy connecting with the people around her, regardless of age or gender. One day, she meets the young genius go player, Sagisaka Souji, in a match that tore at both body and soul, and so she decides to become a pro go player herself!

SUZUKI Matsuri is riding the train to school one morning when she feels the unpleasant slide of a stranger’s fingers on her rear. Not one to be bashful, Matsuri turns and decks the guy behind her, yelling at him and accusing him of being a pervert. Unfortunately for Matsuri, she hits the wrong guy! Her victim is a young man named SUMERAGAWA Omi. He is rich. I mean…. REALLY rich. Ridiculously rich. He chose to ride the train that morning after one of his cars had engine trouble and he didn’t want to bother waiting for another car to be brought around. Of course it wasn’t Omi who had his hand on Matsuri’s behind, and when she realizes this, she apologizes profusely. Omi is not the type to let her off that easily, however. He decides that he likes Matsuri’s outgoing personality and sass, and he wants her… for his bride!

Ever since they've lost both of their parents in a car accident, Kazuki has been supporting her adopted younger sister Mirai. Even as another tragedy strikes, Kazuki's promise to never leave her side is kept, albeit in a different way than Mirai had imagined.

A manga about werewolves and the continued adventures of Hisako and Yato.

This volume falls between the prequel volume, Kindan no Koi wo Shiyou, and the longer main series, Kindan no Koi de Ikou.

A story of a female "phantom" thief and a hot-blooded high school senior sleuth unfold in this mystery chase-action manga.

From Storm in Heaven:
Kira Yuuki is a 15 year old boy whose only wish is to be a normal teenager. Despite what he wants, he isn't really human at all -- he's a Lemora Saramanda. There's a strange symbol on his palm, testimony to what his is. Inaba and Yukia are two of the Kira's closest friends. However, because he is a special type of his species, Kira is wanted by others for the power he can bring. The mysterious Rosen Kroitz Secret Society seems to know a great deal about the Saramanda, keeping them as pets and breeding them. One day, Kira is captured by his pursuers, and Inaba and Yukia chase after the car he's trapped in. The accident that follows changes everything for the friends, as does the appearance of Kira's older brother...