In the near future, a mineral known as "Japanium" is discovered under Mt. Fuji. This ore is discovered to produce a powerful energy source known as "Photon Energy". Dr. Juzo Kabuto and his associates have begun researching Photon Energy, planning to use it as a solution to the energy crisis plaguing the earth, when the nefarious Dr. Hell and his associate, Baron Ashura attack his lab. Along with this, the mysterious "Kurogane House" also has begun to become entwined with the affairs of these two parties. During all of this, Juzo's grandchildren, Kouji and Shiro, encounter one of Baron Ashura's robots on its way to attack Dr. Kabuto's mansion, where he has begun work on his greatest invention. Dr. Kabuto, seeing the danger at hand, sends out the Pilder to Kouji, allowing him to combine with the giant robot, Mazinger Z, to fight against Dr. Hell's forces.

In the story, there are certain individuals known as "graineliers" who produce "seeds" that conceal various powers. A boy named Lucas lives at his disposal with the powers from these "seeds."

After the death of their parents, the three siblings Seiji, Kozue and Shima get taken in by their uncle and move from Tokyo to Ohasama in the countryside. Will they be able to adapt to their new life in the middle of nowhere? A lighthearted slice of life story begins...

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.

I met a Mahou Shoujo; and so began my story.. "Then I will become a Mahou Shoujo!" In order to save Hoshi Karen, the Mahou Shoujo who had protected her even while being pursued by tanks. Kokone, who was entrusted with Karen's Grimoire, decides to become that which is acknowledged as a "Calamity" by the world... A Mahou Shoujo!

The official spin off of Ao no Exorcist.

After three unfulfilling years of high school, Imamura Kinichirou was finally graduating. Because of his delinquent-esque looks, he was feared by his classmates, has made no friends, and his greatest regret was not joining the ouendan (cheer club), which was now disbanded. After an accident on the day of his graduation, he and classmate Fujieda Aki are transported three years back in time, freshman again in body but with high-school memories intact. Can Imamura fix the mistakes of his past? Can he re-do his high school years in the way that he's always wanted? Again!! The universe suddenly shouts.

From DrCoke at MangaHelpers: 2000 years ago, there was a battle between a warrior and the demon king. Through this epic battle, the demon king won. Now, there are kids between the ages of 12 through 18 that are direct descendants of the demon king. They each have unique transformation powers that allow them to turn themselves into varying monsters, such as slimes and golems. Imaichi Butsuko and Hinase Suiren are both one of these monster kids. With the impending resurrection of the warrior, these kids enjoy their daily school lives while preparing for battle!

Updating

Dong Nu was an ordinary beautiful girl in her junior year of high school. After an accident, she met a very powerful yellow-haired man. Although his behavior was a little eccentric, he attracted her attention. As she learned more about him, she began to discover that this man had a shocking identity, as he was not just an ordinary mortal... In fact, you might even call him a... Original Webcomic: http://ac.qq.com/Comic/comicInfo/id/524373

Touma Sou is an MIT-graduated-student who comes back to Japan because he wants to know how it feels to be a high school student. On the other hand, Mizuhara Kana is a strong girl who loves sports. Together, they are partners in solving cases that happen around them. Recipient of 2009 Kodansha Manga Award for Shōnen Category.

Marufuji Enta has a crush on Kenzaki Ameri and as they visit the same class for the first time the best day of his life starts! Ironically, he gets kidnapped until a mysterious hooded girl appears in front of the gangster's car in the name of justice! --- New WSJ Series of the may 2015 batch!

From Endless Youth and Co.: Shunpei Closer's grandfather, Alsyd Closer, was an odd man. He traveled around the world always coming back to Japan to tell his grandson all the amazing adventures he would have. Before leaving to Africa on Shunpei's 7th birthday, he gives him a teddy bear named Hyde. Six years have passed and one day Shunpei receives a mysterious package that contains a deadly surprise. To survive, he will learn more about his grandfather than he ever dared to dream and learn what it takes to be a real man, and not the coward he always thought it was all right to be.

From Batoto: For a long time, wars have been waged between the Overworld and Underworld. In order to end this, people fought for their own cause.

What can you do when you get mistaken for murder? Nothing. You go to prison. Lucky you, your inmates are some of the biggest cutthroats in the prison. Seriously you are lucky. Especially when zombies attack.

Every night, strange happenings visit the residents of shared pension and cafe 'Tsukishiro'. One evening, the main character Touya saved Yuzuriha, and there's something about the mysterious beauty that makes him feel nostalgic. Yuzuriha asks him "Do you believe that there are beings from another world?" From Morimoto Shuu, a lovable story of living together!

From Shoujo-Sense: Arata was just your normal high schooler, until one day when things started to move. He gets entangled in a phone game called "Dragon Collection". With his only redeeming quality being lucky, what can he do about conquering the World?

Jun is a girl whose words have been sealed away. She was once a very happy girl, but because of a certain thing she said when she was very young, her family was torn apart. One day, the egg fairy appeared in front of her and sealed away her ability to talk in order to stop her from hurting anybody else. Since this traumatic experience, Jun lives in the shadows away from the limelight. But, one day, she is nominated to become an executive member of the "community outreach council." On top of that, Jun is also appointed to play the main lead in their musical...(Source: Official website)

For years, fans of the animated series (Avatar: The Last Airbender and The Legend of Korra) have been burned with one question - what happened to Zuko's mother? Finding a clue at last, Fire Lord Zuko enlists the aid of Team Avatar - and the most unlikely ally of all - to help uncover the biggest secret of his life. An Earth Kingdom Scholar's points of view about "family" and governing with dignity motivates Zuko to set things right within his own family. He makes a deal with Azula, releasing her from the mental institution in exchange for her help on his quest to discover the truth about their mother, Ursa. Additionally, with the help of Aang, Sokka, and Katara, the five set out on a journey towards Ursa's hometown. Tensions between Azula and the rest stir trouble and an encounter with a wolf spirit delays them even more, though as they continue, they find their own dynamic to make it all work. Note: "The Search" is a trilogy of comics set in the Avatar universe that directly follows the events of The Promise trilogy. Also, it is expected that hidden clues about Toph's mystery lover will be foretold in future parts.

From Autumn Scans: The fourth primogenitor - is the strongest vampire who exists only in the world of legends; yet when this masters the 12 kenju, the spread of the catastrophe of the vampires will appear in Japan. In order to spy on and erase this, "fourth primogenitor," the government-owned Lion organization has decided to send an attacking magician, "sword shaman" to complete the task. Yet unknowingly, the one who was selected to spy was actually a trainee "sword shaman" girl - Himeragi Yukina.

Kabukicho, Shinjuku – the district that burns with desire is struck by an incurable disease. In this district, a doctor, Inui Date, runs a small medical clinic Night after night, patients with extraordinary cases come to the clinic. Things change when one day detective Maria Daigo, a troublesome patient, appears. Set in a Shinjuku that has been plagued by an incurable disease, the doctor and the detective become entangled in one mysterious case after another as they face the darkness in this psychological thriller. Will the two be able to save this town?

Mamoru is a Nishiarai game player who has switched to a first-class powerful new high school named Hijiri Gakuen Koukou. There he met with a group of eccentric game lovers who call themselves Dennou Kenkyubu, he accidentally joined and had to undergo a variety of events and adventures with them. Translated by google from Indonesian

The story starts with the death of Hikaru Mikado. That guy was a natural charmer, a “harem king”, but had no real male friends. After he died, he became a ghost, a soul, but Koremitsu Akagi can see him. Koremitsu though, isn’t really like Hikaru. His red hair and his evil-looking eyes make him look as a delinquent, even though he is very kind inside. Hikaru asks him a favour: he wants to fulfill a promise, which he couldn't fulfill anymore. The promise was to give his girlfriend and fiancée, Aoi Saotome, 7 gifts for her seventeenth birthday. Koremitsu accepts, and has to work hard to help fulfill Hikaru’s promise with Aoi.

It focuses on a boy named Yamano Koichi, who is one day revealed to be the heir to the supernatural powers of an alien named Babel, who was stranded on Earth 5000 years ago and built the biblical Tower of Babel. Koichi becomes Babel II, armed with supernatural powers and served the Three Servants: the shapeshifting Rodem, the giant, pterodactyl-like Ropross, and the humanoid aquatic robot Poseidon. With his newfound powers, Babel II seeks to put an end to the ambition to Yomi, a man from the Himalayas who seeks world domination.