Some are chosen by the 3 guardians of the Universe that protect the balance of all worlds and to stop a great evil. These soon to be heroes are selected from different worlds and are gifted supernatural abilities and unique weapons to fight of The god of all evil and his force and take back the keystones which hold the source and balance of worlds.

He that kills sinners. he whom carries five blades feels no remorse upon walking with the dead. It is his duty to live forever and find all those who have sinned.

A mysterious transfer student arrives to the third year, class C for Hanazono Girl's Middle School.
Akane is a plain and simple girl who was tired of her over bearing Friends, and silently thinks that it is o.k for the world to be destroyed. However, all the girls of the class wake up to find themselves in a desolated school, with count down timers. Every girl is tied to another one, and this pair must survive a 7 day Battle Royal. As it turns out, Akane is tied down to the mysterious transfer student.

Friendships crumbles, hopes are lost and sanity is tested as the game starts of with a bang!

When all the doors open, the world will slip into chaos... Only the twins Clalisa (open) and Mizeria (close) control the Four Doors that protect the world from descending into chaos. When Rihitel, their guardian, kidnaps Clalisa, he weakens the Door of Chaos and demons begin to pour through, threatening to destroy the entire kingdom. Will Mizeria find her sister in time to close the door and restore order to the world?

A shounen story where 2 teenagers went back in time to the "Three Kingdoms" period of China. An entertaining action series with some light moment & a bit of romance. You also get to learn a bit about that era.

From JanKenPon:
Middle schoolers, Shiro and Masumi, encountered a mysterious dragon that brought them back to the time of the Three Kingdoms; situated in ancient China. As soon as they arrived, they were rescued by the Han Kingdom. Not long after these events, Masumi was kidnapped and Shiro barely escaped death... Soon the story gets more complicated as they are stuck in the past.

In 1997, Ryuurouden won the Kodansha Manga Award for shōnen manga.

Description Based on the Dragon's Dogma video game, this manga series is about the adventures of the Arisen Karol and his main pawn Elise. Karol's simple life as a fisherman changed when his home village of Cassardis was attacked by a dragon, who then proceeds to consume his heart, marking him as the Arisen. Now he seeks to reclaim his heart and along the way, he learns more of what truly makes an Arisen and of the mysterious Pawn Legion.

It's the year 2034 and high school student Sasaki Hiiro boards his bus just like any other day. Everything changes, though, when his bus is suddenly attacked by a mysterious girl with red eyes. When Hiiro awakes, he finds himself in "Tokyo," a city which was supposed to have been permanently sealed off after the outbreak of the deadly Pandora Virus ten years ago. Not only that, but it also seems like all those being gathered in "Tokyo" are developing new inhuman abilities. Now, among the ruins of Shibuya, Hiiro and his friends must discover why they are here and learn all they can about the terrible Malicious Code that is running wild in their bodies before it destroys them all!

From Seven Seas:

Tor Kokonoe has entered the prestigious Koryo Academy, a high school dedicated to training its students to wield Blaze―individualized weapons that a student manifests. The future of a student is often shaped by the form their weapon takes, and when Tor’s appears as a shield, suddenly he’s the odd man out. But that’s when the Duo system comes in, a program where students are paired up. Teamed up with a silver-haired girl named Julie Sigtuna, Tor’s adventures at Koryo Academy are just beginning!

The demon king has awoken after his 500 years long slumber and he tries to destroy mankind. Now a little monk has to travel to look for 12 warriors with powers of the 12 Chinese signs to fight him.

After his mother's death, Miwatari Yuu returns from Tokyo to live with relatives in the city of his birth, Ousuku. Yuu is the latest of a line of Shinto priests that stretches back generations.
After his arrival, he runs into a strange girl who seems to be searching for the Northern Lights. Yuu saw the Aurora as a child, though no one believed him, and his mother had told him it was the armor of the Valkyries traced across the sky. Yuu's destiny is interwoven with this mysterious girl and the aurora, and he will not be able to help being drawn into a battle that involves both gods and humans!

Thomas dreams of becoming a knight and is thrilled when he is admitted to the famous Walst School of Knights. There he meets several interesting characters, such as the free-spirited Bernard and the school genius Hermann.

Two decades ago, the dragons returned to earth. Soaring above the skies leaving behind trails of destruction. They attack humans for the simple reason, their destructive impulses. In order to fight the dragons, humanity acted. They began to dabble in magic...

From Storm in Heaven and one of their legacy groups, Bamboo Feathers:

In ancient China there exists an alternate dimension called Jusenkai, whose inhabitants, the Senkaijin, possess tremendous powers. One of them, YanLang, fled to Earth along with his rebel army after being defeated during his attempt to overthrow the Emperor. In order to capture the fugitives, the Emperor sent his elite soldiers to Earth after them.

LiFang has been traveling alone to find his father's murderer when he picks up a sick and injured man. That aloof man, TuoRen, turns out to be one of the imperial soldiers sent to earth to hunt and capture the Senkaijin rebels. While his comrades work in pairs, TuoRen prefers to be alone. That is, until the strangely powerful human, LiFang, decides to follow him on his quest.

Note: The volume 5 extra is an unrelated short story, "Time Lag."

“Angel,” an experiment, escapes from the lab, and joins Hua Ye’s clan, where there's a 26 year old guy who hates children and nine hooligans. What kind of stories will unfold with them and Angel, who has always yearned for a family? Original Webcomic: http://ac.qq.com/Comic/comicInfo/id/521717

Eraser, the mysterious enemy that invaded Earth 13 years ago!! Before their overwhelming power, the entire Earth neared the verge of collapse. But at the last moment there suddenly appeared Earth's lone savior, The Beast: an ultimate weapon uniquely equipped to counter the Eraser's power!! The Beast is part of the MAGIC Brigade, whose commander-in-chief is also the founder of our Le Prince Academy... Ladies and gentlemen, I present to you, Mr. Vincent!

Ginga is a passionate Blader who travels from place to place, searching for strong rivals so that he can become the best. His journey leads him to a new town where he saves Kenta, a young, would-be Blader, from the hands of the nefarious Face Hunter gang - a group that forces weaklings to battle to forcefully steal their points. Alongside newfound friend Kenta, a Beyblade repair store's daughter Madoka, enemies-turned-friends and more, Ginga will battle fierce rivals, challenging opponents and even the one who caused great tragedy in his past - all on his way to becoming the best Blader of all!

From Easy Going Scans:

In a far place in a far country there’s a mansion where a demon girl lives. One day there was a huge storm outside, so in order to protect himself a mysterious boy named Adam enters the mansion. And so they meet...the little demon girl and the mysterious boy that looks like a shinigami, both outcasts in the human world; they decide to create a school for monsters together!

"I'm pretty sure that the downfall of humans can be completely attributed to their curiosity", such is Ewon Jung's philosophy.
Because of his curiosity and his "affectionate nature", Ewon somehow finds himself, after cheating one time too many on Jiho, dumped and threatened into working as a caretaker for Jiho's new boyfriend, Mookyul... who just so happens to be a Mafia Boss.

And it is just the beginning of Ewon's troubles.

Between Jiho, who still burns at Ewon's infidelity, and Mookyul, gang-leader with movie star good looks who starts to take a keen interest in him, Ewon slowly gets entangled in a net more intricate than that of the dangerous underworld, how will he survive it?

Official English version
Publication by Lezhin