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)

Gi Yuh is the leader of the strongest gang in his high school. He lives together with his younger sister, who seems to love him.
When saving the beautiful Ha Na from a truck he instead gets injured and lies in coma for two weeks. During these two weeks he dives into a strange dreamworld and after his recovery he is not the same anymore. He regularly dreams about what seems to be a past him. To find out what happened to him he asked his teacher for help, who has friends, who deal with fortunetelling and supernatural powers. Here he finds the answer to his strange condition: He is supposed to be a "higher" ghost", who takes the position of a dead or soon-dying person.
(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)

A powerful sorceress, Feicia Rand Philistin, once tried to conquer the nation of Shurian. In her wake of terror and destruction, a man stood up and rebelled against her oppression and domination. The people called him Maian the Brave (Yongja Maian) and it was he that sealed the evil sorceress.
A thousand years later, Fenix Maian in the biggest mistake of his life releases the sealed sorceress that his ancestors have tried so hard to keep imprisoned.Now he has to keep the sorceress from taking over the world once again...
(Source: SolitaryCross)

From ADV:
Woo Sang High is under attack! The entire student body is being terrorized by a duo of frightening bullies who have recently been released from a juvenile detention center. Guk Do and his muscle-headed sidekick, Chung Ki, are on a rampage and they have set their sights on Saang Tae, a brawny teenager with the courage of ten men. He alone will battle the fearsome duo, but there’s only room for a few at the top, and only one man can be The Boss.

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)