A prequel to the original series, the story centers on Chiffon Fairchild's first year at West Genetics prior to her becoming Student Council President, and also explains the origin of her title, "The Unmatched Smiling Monster".
(Source: Wikipedia)

Black God is about a 19-year-old aspiring game designer who meets a Mototsumitama (divine spirit) over a bowl of ramen and ends up losing an arm because of it. He wakes up the next morning with the arm intact and discovers that every person's fate is split between three identical bodies known as "triple-liners". If two of these "doppel-gangers" meet each other, they will die and their luck will be transferred to the third doppelgange, who becomes a root.

FROM BH007:
A semi-generic fantasy-action manga.

In the future, an energy source called "Life" has become incredibly important. Certain people are able to synchronize with devices called "Sai" which gives them the ability to extract "Life" and have super powers. These people are known as "Sai Takers." Within the "Sai Takers" there is an even smaller group, "Original Takers." "Original Takers" have a contract with a magical device, and they can manipulate "Life" without the use of a "Sai." These powerful people are also immortal, and they only die if they run out of "Life." The world admires "Sai Takers," but "Original Takers" are careful to keep their identities secret.
Nanase Kyouya is an ordinary teenage boy, who moved in with the girls Igarashi Kyouka and Yuma after the death of his parents. Yuma is a "Sai Taker," but Kyouka is an "Original Taker." One day, he goes with them to see a new model under testing of a magical device, based after Kyouka's. After a deadly terrorist attack, Kyouka desperately contracts Kyouya to the new device model to save his life. The device has some side effects, however, one of which is that it transforms Kyouya into a girl! Now Kyouya is secretly an "Original Taker", and he must go to the elite "Sai Taker" school, as a girl, with Yuma. Will he be able to keep enough "Life" to stay alive? Will he be able to navigate his life as a girl? What other side effects of this device lie in wait for him?
(Source: MangaHelpers)

After experiencing tragedy firsthand, Amagi Souji does not feel that he is deserving of love or of loving anyone. It is not until a strange girl appears before him wanting to learn just what love is that he finds himself caught up in a battle between female warriors known as "Ark Processors." Will he learn to feel love again and will he be able to teach her what true love is?! Only time can tell!

(Source: MU)

Inamine-kun, an aspiring young manga artist, is a total failure at whatever he does, but some of his work has caught the eyes of a busty beautiful mysterious editor from a B-rate magazine. Will he turn around his fortunes through her? Will he form a relationship between boss and subordinate? Read Koimoku and find out!
(Source: MU)

Aflame Inferno is about a self absorbed high schooler, Kang Shichan, that gets caught in the middle of a battle between demons. Injured severely and near death, the demon Inferno merges with the student to save his life. Together they win the battle to discover that they are inescapably joined. The only hope of every being separate beings is to close down 1,000 Invento Hells and find the right spell of Resurrection. Can Kang Shichan balance hunting down demons with his school work?
(Source: MU)

Beings from a different dimension have started a war with mankind. To counter this threat, an academy called "Genetics" that trains female warriors called "Pandora," who can wield special weaponry and armor, was formed. Kazuya Aoi decided to enroll in this school because of a promise with his sister, an outstanding alumnus who died in battle. There he meets second year Satellizer el Bridget, nicknamed "The Untouchable Queen" due to her solitary demeanor but also top of her class whose battle simulation streak is undefeated, until he came and slowly changed her.

Published also in alternative Full Color Version (Korean)

The protagonist, an egocentric man who's led a successful life as the CEO of a company in modern society is murdered and reborn as a beautiful lady named Paril from a noble family in a fantasy world. Once he wakes up, (now in the body of Paril,) he finds out that he's now in the body of an "inferior being" and that all his wealth, achievements and successful life have vanished. Therefore, he decides to rebuild everything from scratch and make it to the "top of the pyramid" in this parallel world.

Reiji is your typical high-school student living with his big sister Ayaka. One day he stumbles upon a pair of bracelets on the sidewalk. He picks them up and tries to find the owner but gets sidetracked as a bag snatcher runs his direction. He tries to stop him but is stabbed and killed. On the brink of death he hears a voice from the bracelets "If thou wishes to live form a contract." What has Reiji gotten himself into? And what exactly does the contract entail?