In the 30th century A.D., in a world in which magic exists, 100 years have passed since the human race won a war against the Devil King. Even though the war caused many sacrifices, slowly but surely civilizations began to rise again.
One day, a virtuous child named Sai Akuto ("Worst Evil") is adopted from the orphanage he's lived in ever since a witch quietly left him at the church as a baby.
Five years later, Akuto passes the test to enter Constantin Magic High School. But after arriving and taking the vocational aptitude test, Akuto receives surprising results:
Examination Numbers: Number 021
Name: Sai Akuto
Future Occupation: The Devil King

An espionage seinen manga that takes place in the era of Cold War. Ken, Dr. Hattori and Rosa, three different characters are forced to team up in order to protect Sphere of Salvation, a new technological miracle that is capable of changing the course of history. Whoever holds S.o.S. and masters all its hidden forces, will rule planet Earth.

School girl is trained by a secret branch of the police to detect and to kill demons disguising themselves as humans.

Kim Tae Sik is a young man who would much rather spend his time at internet cafes, playing games, than going to work and filling out papers. After getting fired from his job, he ends up seeing a mouse cursor and follows it, leading him to a group of delinquents who earlier beat him up. Seeing how the cursor changes to a knife shape, Kim Tae Sik decides to fight the delinquents head on and ends up winning.

From there on, he chooses to follow the mouse cursor and wherever it leads him, as he believes that it has all the answers and keys to his purpose in life.

From Bunny's Scanlations:

Searching for info on drug selling, ring leader Leaguer gets found out. Luckily, Yakumo, a call boy who was present at the time, helps him. Hoping to get more info, Leauger wants to get close to Yakumo, but things are never as innocent as they seem.

After 10 years of training, Yoichi returns home to fight against the Wenkamui, an endless horde of mysterious monsters that threaten the safety of his village. He's not alone in his fight; his best friend Ryuu, drawer of the divine sword Kamui, has also spent this time training to fulfill his destiny. However, a decade is a long time, and upon his return, not everything is as Yoichi expected it would be...

[Written by MAL Rewrite]

From Easy Going Scans:

In a future devastated by war and desertification... is unexpectedly, a flower shop!

Young Gabriel Woods is about to discover that his dreams for an adventurous life will lead to something unimaginable. The door to the realm of the oldest race in the universe, GODS, is finally open to humans. From the mysterious dream eaters of hell to the legendary ocean realm of the sirens, the vast mysterious universe lay before him to explore, but Gabe must first prepare. Welcome all to the GRAND ACADEMY of OURANIA for GODS, where you will learn how to truly become a GOD. Is Gabe ready to face the powerful GODS of the new age, or will he regret wishing for more?

Blood, war, and betrayal: this is the story of the Scarlet Macaw, leader of an organization devoted to crushing political threats on the Mervellian continent, a part of the Crimson World.However, the Crimson World is becoming darker than ever...http://tapastic.com/episode/81638

From Enterbrain:
The tale of William Tell has never been rendered this beautifully as in Mitsuhisa Kuji's stunning debut work Wolfsmund, where a fortified barrier-station torments the Swiss Alliance murdering all who stand against it, until William and his son attempt to defy it.
A fascinating reimagining of a European legend, Wolfsmund is a retelling of the William Tell legend with a focus on an actual landmark in the Uri district of Switzerland, the Devil's Bridge at St. Gotthard Pass. Filled with action, politics and drama it has all the makings of The Game of Thrones, including its share of bloodbaths, but told through a historical fiction perspective.

Jung Yoon-hwan may be an orphan but he was a college student who was focusing hard on his studies, one day he is brought to a mysterious "White room" to fight even when he does not want to. Every time he defeats these monsters he gains psychic power, magic, and items beyond his imaginations....

(Source: Game of Scanlation)

Siscon. Power-phobia. Son of the great General Luccafort. Son of a general. Wether-crown. Fourth-in-line for succession. The titles, accolades, expectations, respect, and envy for DX Luccafort keeps coming. But all he wanted to do was win Marion's hand.
Landreaall follows DX, his sister Ion, and his bodyguard/brother Rokkou as they leave their home in the countryside and brace themselves to take on whatever their famous last name brings them.

A six chapter mini-series by Miura Kentarou set 100 million years in the future, it's about an epic war between the forces led by Zeus and the nether forces led by the giant Alcyoneus.

Beginning on the 4th day after a zombie virus has broken out, this is a story about the will to live, human instincts and our selfish desires. A thrilling tale about the survivors of a zombie apocalypse. Original Webtoon / English Version by Naver

Universal Century 0079. The Battle of Solomon rages and Anavel Gato strikes the Earth Federation Forces with terrible force.

From MangaHelpers:

In a strange twist on Arthurian legend, young Art pulls the magical sword Excalibur out of a stone--only to find himself as one of a million Arthurs, fighting to defend the island of Britain from enemies and to earn the rank of the true king. Art is pretty puny, but his childhood friend Ligu (who was also chosen by an Excalibur) tries to keep him from being immediately killed.

Soon Art lives in a castle with knights, which are created beings who serve the kings. From the respect with which he treats the knights, he inspires some to hope he becomes the true king. But is that really achievable by a scrawny crybaby like him? [tethysdust]

A new transfer student, Tae Yeob, on his first day in an all-boys school (though it is enticingly close to an all-girls school), stutters through introducing himself. He's awkward at first, but the other boys' snickering stops when he says with sudden calm, "My hobby is fighting. My goal for the future is to become an MMA fighter. I plan on crushing all this school's fighters by next week."

After collecting information about the various personalities and fighting styles of the top fighters in the school, he's ready to make good on his word. Ssen Nom, The Strongest Fighter, is an earlier work of the manhwaga of the God of Highschool, and it shows its lineage in bruises and blood!

Slight retelling of the 2001-2002 Mazinkaiser OVA series. Included in this vokume is a short story called Mazin Kaiser: Shin Majin Densetsu (Mazin Kaiser: Legend of a New Demon God).