From Chibi Manga:

The moody, picturesque him. The puppy-like me who wants to express my love. I wonder if we can grasp this love well.

10-year old Ken (Ken'ichi) Mitsoba is an average kid who goes to elementary school, and struggles with his studies. Meanwhile from ninja land aka Land of the Ninjas, a little ninja named Kanzo Hattori comes, and befriends Ken'ichi. Hattori is now a part of the mitsoba family along with his brother Shinzou, and his ninja dog, Shishi-Maru. Hattori helps Ken'ichi with his problems, and constantly keeps an eye on him, as a good friend.

What happens when the greatest martial artist of the Murim world meets a genius magician from a fantasy world?

The manga's story follows Kimura Shigenari, a real-life samurai who served Toyotomi Hideyori. Kimura fights in the Siege of Osaka in 1615, but is hit with a mysterious light. He wakes up in a land ruled by England's legendary King Arthur.

In the Tranquil Sun province of the empire, there exists an unremarkable lordship known as Xue Ying Territory! This is the home of the Dong Bo clan, the clan of our hero Xue Ying! His father, a commoner turned noble; his mother, a noble who abandoned her clan for love, and his brother, an innocent toddler. But peace cannot last forever, Xue Ying’s peaceful life is shattered, and the only way to reclaim it is through power!

In the distant Milky Way, inheriting the best human beings - Sun Wen, Genghis Khan, Einstein, Tesla and other genes, orphans, scattered in the interstellar, to solve the mystery of the destruction of the earth, as Bruce Lee's genetic clone of the juvenile blues Swear to bring all the earth compatriots together...

From Easy Going Scans:

Crimes commited using manned combat-androids dubbed "Katana" run rampant.
In an effort to maintain order, the government has organized the AKCD - "Anti Katana Crime Division."
Togusa of the 8th squad of the AKCD, while holding existential doubts as a Human-Katana hybrid, continually casts himself into battle...

A spin-off manga created by Toyotarou, and based on the arcade game Dragon Ball Heroes. It debuted in the November 2012 edition of V-Jump, the release date of which was October 20, 2012.

http://dragonball.wikia.com/wiki/Dragon_Ball_Heroes:_Victory_Mission

He struggles for influence between the emperors and nobles, the fight for power between the underworld and imperial court. During these prosperous times, how will the fates of the people play out

The Masters of Murim lives hiding in plain sight!
But robot humans are hunting them down!
A random boy gets caught in middle of all this and this is his survival story!

Kohinata Minoru is a college student at a college that is popular for its sports rather than academic orientation. He starts out as a gymnast alongside his friend, Nana, but is bullied by his gymnast seniors. One evening, a karate student at the college, Mutou Ryuuji, witnesses Minoru being bullied and comes to his rescue and drags him into the world of karate. Minoru makes new friends and learns some of their dark pasts, including a shocking death that reveals motives for revenge.

From the creator of Danganronpa comes a series that focuses on Guren High, a place where all the biggest and baddest delinquents hang out, so it's the perfect place to recruit some of Earth's mightiest warriors to fight off an alien invasion, right? There seems to be a misunderstanding, though; they're only the heroes in delinquent manga, and that's where recruiter Harmony learned everything she knows about Earth!

Main character design by KODAMA Yuuki.

There's a rift between Hell and the mortal world, and lost souls have been escaping to torment the living. To deal with the problem, the King of Hell released Majeh, the greatest swordsman of the underworld, to stop the wayward souls.

Years ago, the gods fought against each other before being sealed away. However, their artifacts remained in the souls of the HuaXia clan as part of a contract and hope that someday in the future, they will awaken once more using those artifacts...

Kinnikuman (Muscleman), a weak and clumsy super hero, constantly getting into wacky situations. As the series progressed, the story began changing from comedy to action as Kinnikuman battles stronger and stronger foes in the wrestling ring. The series continually introduced new Super Human characters, known as Chyo-jins, who would challenge Kinnikuman and his friends for various purposes.

Note: Received the Shogakukan Manga Award for shōnen manga in 1985.

The original run was from 1979-1986 and ended with Vol. 36. The series directly continued in 2010.

Since ancient times, witches fought demons to save the world. However everything changed 100 years ago. The clan of witches secluded themselves in the mountains with a shield enchantment. Only the talented ones are able to freely enter and exit. And among them predicted that the clan of witches would destroyed by the one with siler hair. Daughter of the clan's patriarch, a head of silver hair, born to change the skies...

A narrow dead end world, in a chaotic era. A piece of rock, is key to the fate of this country, with its shocking secret. Life is harsh, mentoring is tough. A trip to a creek... a heinous murder... are destined to... an ancient world, a heros's tears, the dusk at day's end... Looking back, I believe everything in the world is for the fortunate, and also for those fated to be.

An unlikely once-in-a-lifetime master from the rural countryside, a mysterious jade pendant that can see into the future... Lin Yi is just an ordinary student, but he bears another heavy responsibility - to pursue the campus queen! And it’s on the orders of her dad! Although Lin Yi really doesn’t want to deal with this high-maintenance young lady, you can’t disobey your elders. He has no choice but to transfer to a school all the way in Songshan City...

One-shot story published as a special prologue chapter to the 4th Bleach movie, Jigoku-hen.

Based on the widely popular light novel World Of Immortals.I am using the light novel's description below...
The World of Immortals, it is the world every mortals long for. For many, it is an eternal glory to cause a spatial distortion and enter the World of Immortals. But the vicissitude of time is simply merciless, the legends regarding immortality had long been forgotten.

However, a miracle shall rise once more! An immortal was about to split the space with martial arts and cut all ties with the mortal world. The protagonist, Xiao Chen, was caught up in it and accidentally brought to the World of Immortals. What will they find in the vast world beyond the rift?