From Meijinification

Matsuka Ryou is a school girl who doesn't seem to take life seriously. She dreams of growing up and becoming a wanderer or a minstrel. She's the adviser and sole member of the light music club (although it's not really a club). However when she picks up a key that a teacher drops, a whole new world is opened up to her...

Gangryong is a high schooler; unlike others, he has always had a dream of being the strongest. One day he meets Youcheon, who teaches him a powerful skill. One year later, people come to see him and announce that his "master" is dead. Because he was his only student, Gangryong has to follow them and go to a school where everybody has supernatural powers. This series is read from left to right as it is a Korean Manhwa.

In a universe where men and women are mortal enemies, Hibiki is captured by a band of female pirates. The group find themselves stranded with a super ship they dub the Nirvana and set out for the female home planet. Along the way, they discover the existence of the "The Harvest" and the possible destruction of both men and women.

The manga differs greatly from the anime, with fewer characters and focusing more on the relationship between Dita and Hibiki.

From MangaHelpers:

There are people in the world who have strengthened their heart and spirit beyond imagination; so much so that they are able to materialize objects just by willing it and its potency is only limited by the users' determination. These people from the far east call themselves the Wazabito and are admired for their power that transcends the physical universe.

Tekuni is a cute Wazabito swordswoman who is traveling the world to train and master her abilities. With her friend Huk-Ro, the owl of knowledge, Tekuni wanders from one danger to another, making friends in the process. [vyc]

— By the author of History's Strongest Disciple Kenichi

Hoshino Fuzuki, a high school student, once experienced a weird accident when she was in the 3rd grade. Now, the weird accident is coming again. She cant get in to an animal, then can see from the eyes of that animal. Not only sight, but she can also feel other senses that belong to the animal. What is that power?

N/A

Who or what is Kagome? The manga is a series of stand alone stories connected only through the character Kagome, as you slowly learn a little bit about her each time and her interactions with people of this world.

I don't quite get that they call me by tactless name, "vampir." She is all that I desire.

Louis, a vampir boy lived with the Kamuro family as a "brother-in-law" in a home of human being. He had hoped it would last forever, however, peaceful and pleasant days with his beloved sister, Harumu, suddenly collapse with an appearance of another vampir, Noah.

From Dark Horse:
It's a time in the future -- a time where the creation of life itself has evolved to include biodroids named after the ancient Greeks and cyborg warriors programmed to destroy. The power struggle between the various synthetic life-forms and the humans could mean the end of all life. But there is one, named Typhon, who may be able to prevent that.

From MangaHelpers:

Tsubaki Tenji seems like a normal high school boy, but at night he secretly works as a detective! Though he pretends to be kind of dim and clumsy at school, he's very physically skilled, and he fights using 500 yen coins as projectiles. However, he's not working just because he wants to-- he's got to pay off his vanished father's ridiculously large debt. He works for the Muroto Investigative Agency, under Muroto Shino, and alongside Shino's teenage sister, Yuki. He's always sleepy during the day from working at night, but if the school finds out the truth he could end up expelled.

Unfortunately, his classmate Tachibana Kirin caught on to his act. She finds Tenji's true skills to be incredibly cool, and his work to be very exciting. As the price for her silence, she convinces the group to take her on as Tenji's assistant detective. Now she and Tenji are in this dangerous business together! [tethysdust]

A oneshot released in 2013 by Morihito Eki also known as Nieki Zui - the author of Kanojo wa Rokurokubi. The Street Observation Club's activities are to observe buildings, signboards, posters etc. and appreciate these things. Today, Chiemi, the director, Tomato, a foreign student, and Rumiko, a 3D Projection, will look for something new to appreciate!

Two unrelated middle school students in the same class both bare the name "Hasumi."

The corrupted land of righteous people, a fantasy drama that takes place in the Neverlan Continent.

From mahou:
Hirosawa Taki is a high school girl who just happens to excel at bowling. However, her high school softball team just happens to need another member just to play, and by chance, Taki throws a few pitches and finds that she loves playing softball. Join Taki as she follows her new calling in life...

Wind Mill is about Hirosawa Taki and her new calling to the softball world. Join Taki and her team as they face new challenges with each passing pitch.

From Manga-Koekje:
This is a shounen manga about a high school senior named Taketo Iwase and a dog named Salsa. As they set off early on to resolve a problem with a criminal that Toshifumi (Taketo's brother) is having, Taketo sees that there is more to the dog (that can communicate in the human language) than meets the eye. Together they solve a number of troubles and also meet other different species (cat girls, dogs, birds, etc). Wild Half has some very funny gag lines, some moving plots, helpful morals, in short, a little bit of everything packaged into one. (Shortened review written by Si)

Sakichi sees his peaceful summer onstructed by a girl from the Edo period who assures that he's the reincarnation of his late lover.

Oneshot published under the label STUDIO MEN alongside with Majo wa Houki de Sora o Tobu .

From Anime News Network:
Shion is a young man working for the Onmyou Organization under false pretenses. He is attempting to avenge the destruction of his nation and the deaths of his family members, and targets the Empress in an attempt to destroy her homeland. However, their destinies are in fact entwined, as she not only dislikes destruction, but wishes to unite all of Japan peacefully.

The manhua adaptation of some Legend of the Sun Knight side stories written by Yu Wo released with the original novels.

Who wants to be Princess when you've got the entirety of space to explore? Join Runna and her rag-tag crew as they wander through space in search the unknown, raising hell while encountering everything from the amazing to the surreal.

Winner of the 1999 Seiun Award for Best Comic.