From DrMaster:
Yuji Midorikawa is your typical high school student whose has a secret identity: He is "Green" in the high school battalion unit, Gakusei 5 (G5 for short). G5 is the special unit trained to fight and protect Earth against the invasion of the dreaded Galactic force "Gurdark" and its sexy queen Mayura. But Green has a problem. He really can't fight, and always ends up hiding behind his other team mates. What ensues is a witty and wild ride as our "Imperfect Hero" struggles to maintain his reputation as a "guardian of earth" while keeping up his grade point average in school!

On one side, we have a guy living a boring and meaningless life meets Touko, a pretty girl, and it turns his life around. They get married, but three months later she tells him she is an alien from a far away planet, and that she must return to her home planet in a few days. Is she making excuses? Is she really an alien? Will he let their marriage end so easily?
On the other side we have Honda Haruno, a girl which has absolutely no other recollection other than being "sent" by her superiors to gather information about humanity; as a secret agent she needs to do her best as to learn as much as she can about society without giving away her true nature.... However on her first day of school she meets this boy "Isuzu", who has extensive information about UFOs, invaders from other space & related topics... Haruna not only is surprised to see that her cover has been blown out right from the start, but also she must know how this Isuzu fellow knew about her. Even though they don't realize it; Haruna and Touko are actually neighbors in the Akatoki Hoshi Residence... but, Is this all?

It is the Heian era (794-1185); Yorimichi is a young onmyouji, the son of a famous onmyouji leader of the imperial court. As a boy, he had been hailed for his incredible talent - but a certain incident during childhood stripped him of all his memories and the ability to 'see'.

Lord Koretaka, once the crown prince renowned for his brilliant mind and steadfast personality, is now in exile - supposedly as punishment for murder. Upon their first meeting, Yorimichi's powers are instantly re-awakened. Intrigued by what he believes to be Koretaka's amazing abilities, Yorimichi decides to swear allegiance to the prince.

Akatsuki: a powerful demon of illness, which infects victims, turning their eyes red, and slowly kills them. Usually, they take the form of a strong monster connected to the victim's body. The only way to cure the victims infected with Akatsuki is to slash the victim's body with special anti-Akatsuki weapons, known as "Crave." The people who possess and use these weapons are called "Kiri-Isha" (Slash Doctors). Hibiki, the protagonist of this story, is a Kiri-isha. He is partnered with Kirisa, another Kiri-Isha. Their mission is to cure people infected with Akatsuki.

There's 2 versions, one tankoubon and one bunkoban.

The tankoubon includes:
「暁に立つライオン」 - Akatsuki ni Tatsu Lion (published in Betsucomi, 05-07/2003)
「トルコ取材記」 - Turkey Shuzaizakki (Omake, 06/2003)

The bunkoban version also have the one-shots:
「海に墜ちるツバメ」 -Umi ni Ochiru tsubame
「記憶の足音」- Kioku no Ashioto
Both also present in Umi ni Ochiru Tsubame.

Resume from ShoujoMagic:
Izumi Erina is a senior in high school. She only has one living relative - her older brother Takashi. However, Erina receives an arrest notice for Takashi one day, who is supposed to be in Turkey at the time!! In order to look for Takashi, a mysterious man Sinclair came to Japan and brought Erina along with him. What is the "Black Trap" that awaits Erina in a foreign country...?! A shocking romantic suspense work filled with waves of love and hate!!

Once again, the police are baffled by the serial killings of several young women. Kudou, a detective, is referred to a young girl by a friend. But this girl isn't what she seems - Kudou saw her at the crime scene. Apparently she's a vampire!!

From StarryHeaven:

The era is the Taisho period (1912-1926). Kaibara Aria, who wishes to become a pianist, takes the examination to become a preparatory student at the Tokyo School of Music. The passion in her playing overwhelms her surroundings, like a ripple on the surface of water. It was then that Aria had an encounter with the son of the Nishimikado noble family, Natsuo, and learns a shocking truth... The youth of the maiden blessed by the god of music in this stream of musical romance!

Collection of short stories including:

• Akatsuki no Fumi
The year is 2435, and Takatsuki Minori has developed a machine that can transport historical figures from their original time to the present. His son, Akira, one day discovers that the machine has gone haywire for no reason and ends up accidentally summoning the 16th century samurai, Mori Ranmaru...

As the red-headed princess of Kouka, Yona lived the ideal, though sheltered, life within the walls of Hiryuu (Red Dragon) Castle. Doted on by her pacifist and cowardly father, King Il, and protected by her childhood friend/bodyguard, Son Hak of the Wind Tribe, (who has loved her since they were kids, but keeps his feelings in check). She cherishes the time she spends with the "love-of-her-life" (and older cousin), Soo-won. Though, on the night of her 16th birthday, everything changes when she witnessed someone close to her, murder her father.

Sequel to "Sakigake!! Otokojuku", which sees the return of Otokojuku, the school seeking to train true men of Japan. The story focuses on Shishimaru Tsurugi, half-Japanese son of Momotaro Tsurugi, the original series' protagonist, as he comes to Otokojuku and is joined by a whole new generation of new characters, both children and heirs of former characters and completely original characters.

From the manga habit:

A dream filled with red camellia and the passing of a strange mask... The owner of this mask is a boy named Yue who lives in a temple populated with unusual - and not altogether human - residents.

It's winter, and the nearby town, Utsuwa, is holding a seasonal festival. Kurogitsune, Yue's fox spirit friend, decides it's the perfect opportunity for the sheltered young man to experience the sights, sounds, and (most of all!) the food in the outside world. Even though Yue is forbidden from ever leaving the temple, they sneak into town, not realising what they've set into motion.

Note: #10 is an extra volume. The main story ends in the 9th volume.

From MangaArt: Chacha is the disciple of the world's greatest magician, Seravy. However, she herself is still anything but great. An apprentice witch, Chacha always manages to mess up her spells and bring about disaster. With the companionship of her friends Riiya, a strong wolf-boy, and Shiine, a fellow apprentice, Chacha continues on her wacky journey of becoming a better magician.

Eliza's grandmother constantly destroys any approaching suitor before Eliza gets the chance to talk to any of them. Will this be her chance when she's alone and finds a cute boy in the forest with his pet... worm?

In this world exist three species: the beasts, the humans, and the hunters. Since ages beasts have been the prey of hunters, and humans the prey of beasts. The story follows a famous and powerful hunter nicknamed Little Red Riding Hood, whom the life will change the day he comes across a young beast werewolf girl...

A young girl who leads a hard life finds refuge in her friendship with a tall black being from the local forest.

A short, textless oneshot with a grim take on Little Red Riding Hood.

Long ago, a witch named Red Ridinghood fell in love with a man named Wolf, but he broke her heart. She set a curse on their descendents… should a Wolf ever fall for a Ridinghood, they will turn into a wolf!

This time Little Red meets the White Rabbit, who was incidentally halfway through a race with a turtle. Together they discover a mysterious hole in the ground which leads them to Wonderland. There she meets many delightful personalities like the Cheshire Cat, the Mad Hatter and the Queen of Hearts, in addition to characters from the first book. How exactly will the airheaded Little Red manage to get herself out of Wonderland?

AKB48 is a Japanese idolgroup that has sold millions of albums. Its world famous and every girl dreams of being a member. Hoshina Furea is a shy girl. She has a childhood friend who has a good chance too be an AKB48 member. Her name is Noa. In the school there is an idolgroup named AKB0048. Its a very popular idol group. Only the pretty and talented come to the group. The problem for Hoshina Furea is that she and Noa have the same dream. They want to be in the AKB0048 and get even higher....... What will happen to their friendship? From Phoenix Serenade Scans and Bikkys: In the year 0041, AKB48 had changed their name to 'AKB0048' To protect the affinity of the first generation, they decided to chose a successor. A total screw up research student of AKB Academy, Hoshino Furea, had auditioned but completely failed. And yet why does Hoshino Furea become the successor of the legendary center of 'Maeda Atsuko'?

AKB48 Murder Case is a detective manga series adapted from the all-female Japanese idol group’s “Murder Mystery” commercials for Glico’s “Ice no Mi” candy campaign. In the story, AKB48 members discover the body of fellow idol Kato Rena. Maeda Atsuko arrives at the murder scene and begins to handle the case. All 89 current members of the idol group become suspects. The manga series will be 9 chapters long.

This manga based on the ever popular AKB48 group.

Yoshinaga Hiroko loves AKB48. Urayama loves her, but doesn't think much of AKB48.

Urayama Minoru has a pretty face even compared to girls. After his friends planted the idea that Hiroko was going on a date, he follows Hiroko to an AKB48 concert. There, Minoru finds himself backstage with a pass he found on the ground and then in several lucky pervert situations with many of the AKB star members. After being chased and accused a pervert, his impression of them only worsens. But when he gets to the audience seats and the concert starts, he was dumbfounded: Were they really the same girls he met before? Hiroko spots Minoru. He learns she was not on a date, just in love with the group. There, Hiroko confides in him she's always wanted to shine bright on a stage like them. Although she is not confident in herself, yet can't help but wanting to try. She resolves that her next audition will be her final one and then she'll give up.

Then Minoru decides he will help her in the audition any way he can, even if it means he has to participate too...as a girl.

As Urakawa Minori, he helps Hiroko pass the audition, but inadvertently passes as well. Thus, Hiroko and Minoru's road as idols of AKB48 begins...