The story is set in a world where supernatural powers exist through science, and magic exists through religion.

In the story, Touma Kamijou is an ordinary high school boy with terrible academic scores and a power called Imagine Breaker. Imagine Breaker can defeat any other power, but it also undermines Kamijou's own good luck. His Imagine Breaker's immense strength is literally immeasurable, so hapless Kamijou is listed at the supernatural level of 0. He happens to meet a girl in white hanging off his window balcony. The girl says she is being chased by sorcerers, and Kamijou learns that the girl is a Church of England nun whose memories have been forcibly replaced by Index-Librorum-Prohibitorum — the 103,000 forbidden texts of the Church.

From PRISMS:
Wahhaman is a special robot soldier built ten thousand years ago by the Atlanteans. Found and dug up in present-day Toukyou, he doesn't remember anything, due to a nasty knock to the head he received at some point.

There is only one Magi Craft Meister in the world. After the death of the last Meister over one thousand years ago, Jin Nidou was transported to another world in order to succeed her will.After obtaining the knowledge of the Magi Craft Meister, Jin attempts to use a warp gate but it malfunctions, transporting him to an unknown place. Along with that, an automata he recently restored also uses the warp gate in order to search for her “father”. Thus, the crafting journey of the new Magi Craft Meister begins!

Just your usual slice of life 4-koma... except with an alien transfer student.

Adaptation of the 1st movie of Nanoha.

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.

The Cosmic Era. Coordinators, born through genetic modification and Naturals, who are born naturally. Both experienced two great wars. People devoted themselves to fighting for things they believed in and things they should protect. Fighting gives birth to hatred and hatred in turn gives birth to sorrow. The battlefield swallows the fate of the soldiers and turned into the gravestone to an invisible future. Although a transient piece arrived in the end, the scars of war run deep. Yet in such a world, there were those who walked a path they strongly believed. Engineers giving their lives and roles to that which was discarded and destroyed: Junkers. Those who fight for those without power: Mercenaries. Those who convey the truth to the people: Journalists. Even if they deviate from the noble path, they will follow a path they believe in according to their own beliefs -Astray.

Due to global warming and rising sea levels of the early 21st century, humanity lost much of the Earth's landmass. At the same time, fleets of powerful sentient ships of unknown origin armed with advanced technology and weapons, known collectively as the "Fleet of Fog", mysteriously appeared and easily vanquished the world's naval forces. The Fleet of Fog impose a worldwide naval and aerial blockade, and thus preventing humanity from traveling across the seas.

Seventeen years after the battle, for some reason, Gunzou Chihaya and his crewmates aboard the I-401 and the personification (Mental Model) of the I-401, Iona, started fighting the Fleet of Fog...

Gunji Akira, who has just started high school, has been chasing after his father's ghost by trying to become a police officer just like him. One day however, he has a surprise encounter with an alien while leaving school. And there begins the start of his fateful adventures with extraterrestrial life...

Note: It runs in a seinen magazine and will not be BL. At most, just as Fujobait as any shounen sports manga.

Boot Hour, Shoot Curse is a VRMMORPG that has no concept of levels or professions. Instead, players must farm experience points to gain new skills and increase their status.
Rare, a girl who participated in the closed beta test, has acquired the hidden skill Subordinate, which allows her to turn NPCs into her subordinates. The skill also transfers the experience points gained by the subordinates to Rare. She used the skill to gradually add new NPCs she encountered to her party. As a result of the unprecedented amount of experience gained from her minions, she was able to evolve into a Demon Lord.

The spaceship which Imperial Galactic Navy Officer Alan Corinth helmed was shot down by a surprise attack during hyper-space navigation.
Completely due to freak coincidence, Alan became the only one in the ship to survive.
The severely damaged spaceship lost its navigation capabilities and plummeted onto a nearby planet.

Using an escape pod, Alan headed toward the planet alone.
Thus began Alan’s quest for survival on the underdeveloped planet utilizing the symbiotic nanomachines [Nanom] within his body.
Surprisingly, the planet was home to a thriving human civilization whose genetic code closely resembled Alan’s own.
Even while remaining at a loss due to being thrown into a world of swords and magic, he tries to live as best he could together with his newfound comrades.

What would Alan achieve this strange world?

The Sci-fi Fantasy story in a Medieval setting now begins!

At the risk of his own life, a young man sets foot in the ruins of a devastated old world. His name is Akira, and in order to claw his way out of the hellhole that is his birthplace of Slumtown, the boy became a hunter. In the wastelands he happens upon a strange woman, standing perfectly still, stark naked.
She is beautiful, but it seems that only he can see her. She exists incorporeal, tantalizingly beyond any touch, and she tells him her name is Alpha.
Alpha won’t show even a sliver of her real intentions, but with a wide smile, she brings Akira his first commission as a hunter. Akira takes the task, if only to become a stronger hunter, and having entered a contract, their dramatic lives in the hunting profession was set to begin.

From Stories of the Boy Hunter as recorded by the Eastern Hunters’ association.
Written post-collapse of scientific civilization.

New enemies, new bugs and an even bigger island.

It's been 68 years since the Culling Game. In 2086, an alien race known as the Simurians arrive on Earth in a spaceship. The fate of the world lies in the hands of two jujutsu sorcerers Yuka and Tsurugi Okkotsu. Jujutsu sorcerers and aliens, what chaos will be born from this meeting?

From ADV: Imagine a Neon Genesis Evangelion where choosing the right girl is more important than saving the world! That's the gist of Angelic Days--the hit manga that Eva fans have been waiting for! Based on a popular PC and Playstation 2 game released only in Japan, Angelic Days takes the angst-ridden Eva pilots and sets them in a lighter, brighter world.

Kaede Mizumori, a high school student who can see through people's lies, lives a dry life so as not to make waves. Until he meets the mysterious schoolgirl Rin Homura --- a thin sci-fi alien drama.

(From NovelUpdates)

When I woke up, I found myself inside a spaceship.

I guess you guys think I’m talking nonsense here, but I also have absolutely no clue about what exactly happened to me.

I was really close to completely losing it, but fortunately, I managed to notice that this place was really similar to the world featured in a game I was playing recently.

Am I dreaming? Nope, it’s no dream. Maybe I actually got sent to a different world or something?

But didn’t those things usually involve getting sent to a magical world with elves, dwarves, dragons and whatnot?

In any case, I don’t know what caused this, but I guess I’ll just have to suck it up and live properly in this world from now on.

It’ll be okay. I got my trusty spaceship so I can probably make some money. It’ll work out! It has to!

This is the story of a man abruptly thrown into space along with his private spaceship. He runs around with it and saves damsels in distress along the way, flirts with said damsels, earns money as a merc-for-hire and uses his gaming knowledge to work his way into living freely and easily.

Due to the Gear Expansion, witches who had been friends with the people become unnecessary. Humans, who were afraid of unscientific powers, begin a witch hunt… And a human boy who has his beloved witch killed becomes the “Wizard of vengeance”.

Deadpool makes his explosive debut into Weekly Shounen JUMP!

Humanity has been oppressed for hundreds of years due to the rise and invasion of the natural enemy "demons".
The world was ruled by the "Great Demon Lord" and his 47 "Demon Lords".
While people live in fear, 47 people selected from all over the world have been named "Heroes" and are preparing to fight against the Demon King's army.
And now, a desperate operation with the survival of mankind on the line was about to begin.