From Viz:
In the 21st century, just when the human race needs new heroes, the Lucifer Hawks enter Earth's dimension. The members of the A.M.P., six young women with incredible powers, are set to defend the human race against these monstrous entities from another world.

After his first drama flopped, Lee Hyunseok gave up on being a PD. But when he finds himself being granted one last wish in his dying moments, he wants only one thing: to produce the ultimate makjang drama. Now, he's been given a second shot at life (and the assistance of a ghostly PD), but he's on a time crunch to achieve ratings and recognition. With no budget, rookie actors, and an amateur writer, Hyunseok's got his work cut out for him. But what's a good drama without a few twists and turns?

Chun Hajin, the strongest assassin of the Orthodox Murim’s Righteous Heavenly Alliance. Hajin loses his life as he tries to escape to find freedom.

And then…

‘The divine cult is immortal, may all demons submit. Congratulations on your recovery, third young master!’

He was reincarnated into the body of Murim’s public enemy, the third young master of the Demonic Cult?!

The conquest of the Demonic Murim by Chun Hajin, the strongest secret weapon of the Orthodox Murim, begins now.

Ghislain Perdium, the Mercenary King and one of the continent's top seven, started a great war in an attempt to avenge his fallen family.

His plans of revenge were going smoothly until he was slain by Idun, who he had never expected to make an appearance. Ghislain thought he died, but he woke up as a younger version of himself from before the fall of his household.

With this second chance, he decided to fix all the wrong pieces of the puzzle and avoid making the same mistakes he did in his past life!

The war ended with the defeat of the villains. Now the world is ruled by corrupt heroes. And one of those heroes killed Yihwa's unni. She doesn't know which one, but that doesn't matter. If she kills them one by one, they will be among them. Yihwa becomes the Hero Killer, a villain who hunts heroes every night. This one villain's vicious action fight. "I'll kill everyone, and take everything away!"

Taken from Baka-updates: Yuri Shibuya was living a pretty normal life. That changed the day he was dunked into a toilet after an attempt to save a classmate from a gang of bullies. Instead of just getting a good soaking, he's pulled in. The next thing he knows, he's in a world that vaguely resembles medieval Europe. If that's not odd enough, he's told that he is to be the next Maoh, just because he has black hair and black eyes. The Maoh is the King of the Mazoku, who are coexisting not-so-peacefully with the humans in this world. Much to his subject's dismay, he's totally different from the rulers they're accustomed to. He's kind, considerate, a believer in justice, and not willing to use violence to solve conflicts. Not exactly someone they want running a country on the very brink of war. Now, Yuri has to deal with trying to become a good Maoh, while at the same time attempting to adapt to this land's customs and culture, all in a world where the tension between the humans and Mazoku is reaching its peak.

Park Sooho returned to Earth after disappearing to another world for a thousand years. During that time, Earth had changed into a world of the survival of the fittest thanks to the appearance of monsters. Druid, the king of the animals, who had managed to survive for a thousand years is now off to conquer the world.

How many kicks does it take to smash the heart of a giant? Though she’s not a pure Child of Golden Light, Loxy must learn to channel the sun’s warmth and topple the towering titans that stand in the way of saving her sister. With bloodthirsty giants in her path, and the ruthless God of the Gods, Odin, in hot pursuit, Loxy pushes her body to its very limits in the hopes that she can become half as strong as the sister that now desperately needs her help.

It was an era of terror, a time in history where 10 suns shone as the world below burned under its mantle. As a result, Yae, a legendary warrior, was summoned and commanded by Chunjae, the father of these 10 suns, to shoots down all but one sun. But of course, the suns’ mother, Hwaehwa, did not take this news well and, in vengeance, swore to revive her dead sons. After a long time, Hwaehwa returns and challenges Chunjae to a game of Baduk. She brings Hanbal with her, who was once Chunjae’s follower and releases a thousand demons down to earth, proclaiming that they are a symbol of her Baduk stones. Now, in order for Chunjae to gather his stones, he searches for Dong Bangsak and provides one of Yae’s followers, Hangah Dong Gun (東君) to watch over him as he embarks on his journey to seal these demons...!

Maeda is a new student in the Teiken High School. He stutters when he's nervous and he's rather clumsy. He gets noted immediately because he hits a teacher during the entrance ceremony. Some clubs search to enlist him as they see in him a force they can use to get even with other clubs. But Maeda is a loner and has only one dream: becoming boxing champion. His first objective is to beat the leader of the boxing club. "Rokudenashi" translates as "good for nothing".
The manga focuses more on gang warfare than boxing.

Humanity’s home is no longer Earth. Intersellar travel is now a common occurence, and technology has replaced blood and flesh.

Luka, who grew up in the slums, has turned fifteen and taken the selection exams. His aptitude is of the Imperial Guard.

It was in the year 2800 of the Midgard calendar. Back then, there was a Overlord who once reigned supreme and had reached the very brink of subduing the world. Her name was Lufasu Mafaalu, a great woman dreaded as the Black-Winged Overlord. She was too strong, too fast, and too beautiful. However, she was defeated by Heroes who opposed her ferocity, and her ambition was brought to an end.

Or so went the story of our protagonist’s in-game character, whose body he now possesses for some reason in a world 200 years after Lufasu’s downfall. Follow our protagonist as he becomes unnecessarily feared by his surroundings and unnecessarily worshiped by his former subordinates as he―or now she―cheerfully travels around this fantasy world.

The Post-Apocalpyse and starting a Newlywed Life with an Angel.

I killed the player.

He was a real son of a bitch…

He loved me too much and was a sociopath.

Now that I'm back in time, I'll kill him before being manipulated again and save the harem's girls who will help me win the video game's scenario!

A hero should never kill anyone, not even the worst of villains. Gangyu could never understand why his team of heroes lived by those words, but he tried his best to do the same… until the villain who wiped out his squad killed his brother in prison. Gangyu breaks his vow and enters Ruculus with permission to kill as the prison’s executioner. Now, he must fight his way through the villains to kill the worst of them all.

Eugene Felivia, the beloved youngest son of the noble Felivia family, known for its great warriors, gains a second life thanks to the grace of 'Felin, the Wizard of Creation.' Eugene dreams of becoming a wizard like Felin, who saved him, and using his powers to make the world a better place. However, the dark and harsh realities and his fate still refuse to let him go...

The popular gal who was my childhood friend is secretly uploading provocative selfies!? In his quest to uncover the secret of this popular girl, high school boy Riku discovers that his own deeply hidden emotions were being observed by someone else… A sweet yet suffocatingly intense blend of youth, love, and suspense.

Kobayashi lives alone in an apartment, until one day, Tooru appeared and they ended up living together. Tooru looks down on humans as inferior and foolish. But having been saved by Kobayashi-san, she does everything she can to repay the debt and help her with various things, although not everything goes according to plan. A mythical everyday life comedy about a hard working office lady living with a dragon girl.

A story about an unattractive second-year student, Sakagami, being teased around by a mysterious first-year student who is good at fortune-telling, Mizuki-senpai… But at the same time is actually showing signs that she likes him…

A frustrating and strange love-comedy begins!

Hinowa Tomari is a normal high schooler, until one day he's told that he has to become the wife of a mysterious creature called Kanenogi.

This is the start of their newly married life.