From Wikipedia:
"The story focuses on four people from our world (High school students Makoto Mizuhara, Katsuhiko Jinnai and Nanami Jinnai, and History teacher Masamichi Fujisawa) who are mysteriously transported to the fantastical world of El-Hazard, which is threatened with a massive war between the human nations on one side and the insectoid Bugrom tribe on the other.

...

El-Hazard is a "light" series -- while it has a fair amount of character development, the series focuses almost entirely on action/adventure and comedy."

This story is a manga adaptation of an anime franchise.

From: Easy Going Scans

They walk like ordinary people, they talk like ordinary people but in fact there is nothing ordinary about them since they can materialize an image they have on their mind... They call themselves Chachaoong which also means Shaman and they do not know how or when they came to this world. It is now a time for their current king to choose the future one and so he did by choosing Yu Jin an ordinary human...? Many of the Chachaoong can not tolerate a human ruling them and now the poor Yu Jin not knowing what suddenly hit him, is trying to avoid the Chachaoongs who are trying to kill him!

A guy finds himself transported into the world of a classic horror movie. And what's more, as the 'slutty character' who dies first!?

I'm not a woman, man, human, nor animal.
I am me, and I'm only here to protect.
Completely new work from the same universe of Reimei no Arcana.

Once upon a time in the small town of Hiraya, Nagano Prefecture, lived a normal high schooler named Seta Rinichirou.

One stormy night, he found a Princess named Polilyfa and the Female Knight (Valkyrie) who served her, Krauzera, collapsed in the middle of paddy field. Both of them had escaped from their country who fell to Orc army attack using Gate magic. And now they established a government in exile at Rinichirou house.

Between jealous stalker childhood friend, Princess Pau and Krauzera fascination at Japanese modern technology and culture, and superdense Rinichirounium, a slapstick comedy choked with otaku culture reference in a rural Nagano countryside will begin!
Also, the people from this world and from that world began to visit one after another.

During the Japanese Asset Price Bubble, everyone, men or women, young or old, lived in a world that was filled with frenzy. In the air where strength overruns weakness, there is a “woman” who tries to avenge her past. But, there's a twist with this “woman”. One is that she was a cold killer. Second is that this “woman” is actually a man.

A long time ago, the Earth was ruled by demons. The demons constantly fought each other for survival, but soon found themselves fighting a new race of beings: The first humans. The demons then became imprisoned in ice after a great cataclysm. They would remain there until the ice melted, after which it was said Satan would rise and lead them in Armageddon. That time has come.
Akira Fudo, who has become the Devilman, the only being who can fight demons; a being possessing the powers of a demon and a soul of a man.

Set in nineteenth-century America, Red is the last living survivor of a Native American tribe that was slaughtered by white men. On a long journey in search of revenge, he travels with Iero Ito, a samurai who ran away to America after being defeated in the Seinan civil war, and Ann, a mysterious prostitute. The bonds of friendship between the three are touching. Although it is all fiction, the story seems very real as it is based on actual battles between US troops, Apaches and other tribes.

Her harem is of semi-human girls?! I, who was forced to withdraw from my world. For to learn magic with an alchemist. While learning, I come to a moment that only with my eyes could make any girl fall in love.

Bell Cranel is just trying to find his way in the world. Of course, in his case, the “world” is an enormous dungeon filled with monsters below a city run by gods and goddesses with way too much time on their hands. He’s got big dreams but not much more when a roll on the random encounter die brings him face-to-face with the girl of his dreams—but what’s an amateur adventurer got to offer a brilliant swordswoman? And what if the lonely goddess who sponsors his solo adventuring gets jealous?

In Ome, a city in northern Tokyo, the adventures of four different characters of different mentality and cultural background will take place. The only common interest they share is their love for sports and parkour. The heroes are four children that destiny brought together to enable them not only to help each other but also to achieve their personal goals. Tension, competiveness, humour, friendship, intrigues and lots of parkour are the main elements of the world of R.u.N. Are you ready to Remember ur Nature?

You also let's magical girl××!

His name is Kuruto Kagemitsu -- a cute boy with a vengeance. The demon's name is Shuma. He was summoned, much to his surprise and chagrin, by that cute boy...and forced to be his servant.

Their goal - one intrinsic and the other quite extrinsic - is to eliminate 71 of King Solomon's 72 demons (with Shuma being the sole exception for obvious reasons), who are rumoured as being controlled by a single summoner.

The first two chapters of this manga serve as an intro and show us Godzilla ravaging Tokyo in 1991. He is soon joined by King Ghidorah and the two fight. The next chapter shows a team of scientists and the discovery of Godzilla's mutated cells. In the following chapters we see Godzilla destroy the city, and the Futurians appear to propose a plan to rid humans of Godzilla. They are quick to reveal their true identity as disguised Xiliens who want to conquer the world with King Ghidorah. The dragon begins to fly towards the Earth, but finds itself faced with Biollante who now lives in space debris. During combat, King Ghidorah strikes Biollante with its gravity beams. Biollante absorbs the essence of its power and then becomes a plant-like King Ghidorah clone. But even with Biollante's enhancements, it is still defeated. The Futurians' saucer is destroyed and their plan fails forcing them to live incognito among humans. The next chapter is devoted to a group of fishermen sailing peacefully by telling the story of Yamata no Orochi, until Godzilla arises before them. Orochi appears and does battle with Godzilla. Wanting to get a good look at the monsters, one of the sailors began to go towards them. But, he got too close to the edge of the boat and fainted causing him to fall into the water. When he wakes up, the fight is finished and he and his friends find themselves shipwrecked on a raft. The following chapters are humorous adventures and show us "behind the scenes" with a stuntman born and bred to embody Godzilla on the screen. The final chapter features a small Godzilla who is captured by soldiers of the US Navy who want to take him home, but an adult Godzilla appears and reduces their ship to pieces.

The death criminals whom lived in the jail country, Palom are entering the “MAD GAME” in the progress. This is a battle for your freedom.
What is the meaning of freedom? Those that spill scum blood like a butcher massacring people, is there the flavor of freedom? I swore before, I will use the legend sword in hand, breaking apart the shackles of this world!!

From Easy Going Scans

A teenager decides to enroll in a Martial Arts High school so he can learn how to defend himself and not get bullied anymore. But the school he has chosen to enroll in is not like all other typical martial arts schools and he will soon be caught up by a surprise!

A collection of Houkai Gakuen lost comics.

In this world, there are a group of masters known as “Death God’s Enemy”. Those masters can withstand all kinds of diseases, disasters, and even death itself. As long as you have the right qualifications, you may even employ them to free you from the Death God’s grip.

From MangaHelpers:
It's been years since the vampires were wiped out, but it looks like another kind of monster is troubling the city. In the latest serial murder case, corpses are found with blood and meat, but all the bones missing. To investigate the monstrous murders, the police send for the famous retired vampire hunter, 70-year-old Hans Vapitto. He feels a strong connection to the city, and agrees to return to the field to protect it once again. This time he's teamed up with the youngest employee of the police department, and he also has a young half-vampire woman on his side. Will Hans be able to protect his city from this new threat?

From : Tcmanga

Yanagawa Rikka is a student at Armeria - a school where only 30 students are attending.
Little did Rikka realized that she was actually the one chosen by God to protect the world from the almighty God of the Death.