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.

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.

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.

At the end of my terminally-ill life, I found myself reincarnated as a dragon in a webtoon. Once again, a life with a terminal illness, but this time, as a dragon?!

Lois, born with the heritage of the strongest creature in the world with wealth and thousands of years of lifespan as a dragon.

However, facing unpredictable crises at every turn, not knowing when I’ll die—what kind of Bullshit is this?!

It’s too unjust to just quietly die like this. Utilizing the future knowledge I have, I’ll survive like a villain and give this story a twist!

Born the son of a mercenary in the war-torn north, Almark sets out on a long journey to the Nork Academy of Magic in the south to fulfill a promise he made to his father to become a sorcerer.

After a long journey, his life at the academy was completely different from the world he was in. Almark is always confused by the gap. However, while making mistakes, with the help of his colleagues and teachers, he gradually shows a glimpse of his talent.

With the pride of being the son of a mercenary, Almark takes the first step toward becoming a sorcerer.

When the world was plunged into darkness martial artists gathered to form the ‘Northern Heavenly Sect’. With the help of the Northern Heavenly Sect people began to enjoy peace again. However, as time passed the martial artists began to conspire against the ‘Northern Heavenly Sect’, and eventually caused the death of the Sect Leader, Jin Kwan-Ho, destroying the sect with it. As everyone left the sect, Jin Kwan-Ho’s only son, Jin Mu-Won was left behind. Mu-Won has never learned martial arts, but he finds the Techniques secretly left behind by his father and begins to acquire the martial arts of the Northern Heavenly Sect.

Liam Sera Banfield is a reincarnator.

He was reincarnated into a fantasy universe of swords and magic, but at a time that civilization was already making advancements into outer space. The setting takes place in an intergalactic empire, a space opera-like universe where humanoid weapons and spaceships do battle. Liam, who had incarnated into an aristocratic family in a monarchic society, has the ambition to one day become an evil lord. In his previous life, Liam had unfortunately lost everything and died in despair.

"It’s foolish to live for others. I will live for myself."

Holding those feelings in his chest, he starts towards his second life, but is instead worshipped as a virtuous ruler from his difference in values. Will Liam be able to safely become an evil lord?

After the soldiers' mercenary group where he used to work had been utterly destroyed Loren, who survived the disaster, decided to walk the adventurer's path as a way to make a living. However, for Loren who had no acquaintances and nothing but an empty pocket on him, receiving a single quest seemed like a faraway aim. So, as he was contemplating about what he should do next, another adventurer called out to him.

Egil, an S-rank adventurer who has lived hateful of "slave", falls in love with one slave at a slave auction he was forced to bring.
She was Eleanor, the former third princess of the Kingdom of Cornelia.
Eleanor, a slave to Egil, begs Egil to "kill my childhood friend who sold me to a slave trader"! !!
Keep an eye on the estrus slaves if there is a chance! Can Egil rescue the body and mind of beautiful girl slaves and bring peace to this world ...!

Junpei Ichinose, a student at a magic school in Tokyo, is a dropout who has never discovered his magic aptitude. Suddenly, the beautiful witch Meryl appears before him and tells him, "I need your power, the reincarnation of the Demon King". Junpei finds out that he has the power of the Demon King. He learns that he has the power of the Demon King, and his secret is revealed to Sonia, a beautiful girl who is a descendant of a brave warrior. Junpei, who has no intention of becoming a Demon King, persuades Sonia to teach him how to use his power properly. However, the Demon King's power is the strongest and worst "erotic magic"!

The harem school battle to master H-magic with beautiful girls is about to begin!

The fate of Ye Tian changed when he gained the ability to replicate the talents of other people. In order to protect his sister, he was struggling to survive in a world where alien beasts had invaded. In order to become stronger, he started exploring unknown worlds and gradually unravelled the secret to enter different dimensions…

Relaunched manga adaptation of the light novel "Sono Mono. Nochi ni..." drawn by Shinichirou Nariie.

Wazu was an ordinary townsman who shut himself off in “Mountain”, because of an unfortunate course of events. After 2 years he decided to come down from the mountain to meet with people. But there are various misunderstanding about the “Mountain” which he shut himself off in. And then he meets with the people repeatedly. And after that...

An old MMORPG called Live Dungeon. Before the service was terminated, Kyotani Tsutomu made full use of 5 notebook PCs to clear the game and was invited to a different world. And then, Tsutomu was speechless when he saw a live relay of a dungeon capture in the different world. They bulldozed through without any thought of strategy. The misfortune of getting the healer position. Tsutomu reinstated the White Mage that had always been his favorite in games and aimed to conquer the dungeon to find the key to his escape from the different world.

Zarmen, an adventurer who can't level up decides to retire from the adventurer business. Furthermore, in order to graduate from virginity, he decided to splurge on all the assets that I had diligently saved up since his reincarnation at a high-class brothel. The woman who appeared in front of him was the finest woman he would ever have known. Thanks to her hospitality, Zarmen fully enjoys his first time, but at that moment, his ears hear a mysterious announcement, "Impregnation confirmed.", "Level up!" "Does this mean that the more "seeding" you do, the stronger you get?"An extraordinary implantable foreign world adventure fantasy created by a bottom adventurer who has been at level 1 for many years levels up through sex!

The Mushoku Tensei 4Koma.

Max-level internal arts, max-level external arts.

Jianghu, Murim’s famous and strongest, Cha Shin Hyeon.

I came back to Earth after reaching the peak of martial arts, but why has everything changed so much?

A world where monsters are coming out of dungeons, and hunters are leveling up via their status windows.

‘Start again from level one? That doesn’t phase me at all, since my martial arts are already at the max level.’

Due to an accident, the protagonist Varius died and was reincarnated. He was shocked to find in this new world, his former job as a Tamer in the previous world was acknowledged as a low class job in this new world.

Utilizing his knowledge from his previous life as a basis, he then applied unique buffs to his beasts, taking back the ultimate power that he once possessed.

With this power in his hands, he sought to start his life as an adventurer. However-

Artist's Twitter (NSFW): https://twitter.com/NiwaRhythm
Webnovel: https://ncode.syosetu.com/n7251fq/

A gate appears in Tokyo's Ginza district sometime in the 21st century. From the gate pours out monsters, knights from middle-age Europe, and other fantasy-like beings, and they kill many of the citizens of Tokyo. This event is known as the Ginza Incident.

The government sends a small group of soldiers from the Japanese Self-Defense Forces to the alternate world beyond the gate. Led by otaku soldier Yōji, they find that the villages in the world are being attacked by a dragon. An elf girl who is a survivor from the dragon's rampage joins the group in their travels across the dangerous new world.

A young pharmacologist and researcher in Japan died from overworking, and was reincarnated in a Medieval Parallel Europe. He was reincarnated as a 10-year-old apprentice to a famous Royal Court pharmacist, had attained an inhuman skills of ability to see through disease, material creation, and material destruction.

In a society in which dubious medical practice are rampant, price gouging thru the monopoly of the pharmacist guild, and good medicine aren't available to the commoners. He was recognized by the Emperor at that time and opened a Pharmacy at the corner of the town.

He will wipe out the fraud that has swept the world, and deliver to the commoners a truly effective medicine that was developed using present day pharmacology. Thus the boy pharmacist will cheat by using his previous knowledge to create innovative medicines while helping the people of the parallel world, a story about living his new life to the fullest this time.

The popular web novel now comes in manga form!

After the great battle between the Demon King and the Hero, justice prevailed and the devils scattered. The Demon King was killed. A few years later, the Demon King's daughter went on a journey to find her father's heritage, and met the granddaughter of the Hero. Could this journey signal a new start for the two?