Nightow, Yasuhiro

Much of the damage attributed to "Vash" is caused by the activities of bounty hunters who are after the 60,000,000,000$$ (sixty billion "double dollars") reward on Vash's head for the destruction of a city called July. Vash does not clearly remember the destruction of July, and only wants "love and peace", as he puts it; though he is a gunfighter of inhuman skill, he uses his weapons only to save lives wherever he can.

As the series progresses, more is gradually learned about Vash's mysterious history and the history of the human civilization on Gunsmoke, the desert planet the series is set on. The series is often humorous in tone, but at the same time it involves very serious character development and especially in later episodes it becomes quite emotionally intense. Vash is occasionally joined by a priest, Nicholas D. Wolfwood, who is almost as good a gunfighter as Vash himself, and later is targeted by a band of assassins known as the Gung-Ho Guns for reasons which are mysterious at first.

Trigun evolves into a very serious discussion of the nature of morality, posing questions such as: What is the nature of morality? Can we judge different moral codes? If a person is forced to betray their moral code, does that betrayal invalidate that moral code, and can the person still try to live up to that moral code? Can the person find redemption from their wrongs, and if so, how?

(Source: Wikipedia)

Trigun Maximum

トライガンマキシマム

Matsumoto, Leiji

One year after the events of the First Cycle (Andromeda Arc), Tetsurou has returned to Earth only to end up chained in his home in Megalopolis. It is then that Maetel appears before him once again, offering him the opportunity to join her on a new journey—one she claims will lead him to his destiny.

Ginga Tetsudou 999 (1996)

Galaxy Express 999

銀河鉄道999

In the future, humanity has achieved a vast starfaring civilization, but is slowly and steadily succumbing to ennui or despair, often due to defeat and subjugation by a foreign invader. Rising against the general apathy, Herlock denies defeat and leads an outlaw crew aboard his starship Arcadia to undertake daring raids against Earth's oppressors. Their primary oppressors are the Mazone, a race of organic plant-based alien women who explored Earth in the mythic past and are now back to reclaim it.

(Source: Wikipedia)

Uchuu Kaizoku Captain Herlock

Captain Harlock

宇宙海賊キャプテンハーロック

Otomo, Katsuhiro

Nagayasu, Takumi

Orbiting serenely above a long-ago poisoned earth, the last bastion of human civilization is the space colonies. After a terrorist attack, the colonists are forced into exile on the blighted planet below. In the confusion, a young mother is separated from her family and is flung into a bleak, uncertain future... But Sarah will not rest until she finds her children.

(Source: ANN)

Sarah: The Legend of Mother Sarah

The Legend of Mother Sarah

沙流羅 -The Legend of Mother Sarah-

Hokazono, Masaya

One day Fumiki meets a strange dog at the factory. A dog who can understand human speech and push blades out from its forehead. The mysterious number "23" is carved onto its ear. Although there are many unsolved mysteries about the beast, the two begin to communicate and build trust. "23" arrived at the town following the voice of a higher power which said, "Observe mankind." Meanwhile a giant organization is moving behind the scenes to capture "23." The leader Kiryu wants "23" so that he can control "Tokoyonokuni, the land across the ocean of the dead, ancestors and human spirits. A paradise of eternal life and decadence."

(Source: ANN)

Inugami

犬神

Itou, Takehiko

Gene dreams of life as an Outlaw, and fate smiles on him as he seems to suddenly wind up with a great job. But as things go awry, and he finds himself the new owner of the fastest, most technologically advanced space ship in the galaxy. Unfortunately, it's stolen and the owners want it back... Along with his partner Jim and the lovely Melfina, Gene must fight his way across the galaxy battling pirates, aliens, and assassins as he attempts to discover the secrets of the Outlaw Star.

(Source: ANN)

Outlaw Star

アウトロースター

Itou, Akihiro

Problems of the supernatural are menacing the city, and it's up to Kagura Security to stop them! Together, firey president Yuka, stylish Maki, computer expert Takami, brilliant mechanic Yui, and normal guy Youichi, are detectives, damage control, and more.

Geobreeders

ジオブリーダーズ

Sugisaki, Yukiru

It is the year 4088. It has been over one thousand years since the Crisis of Systems (Lost Property), which resulted in the destruction of four planetary systems, leaving only a single inhabitable planet, Zion. Mankind is forced to live in space colonies, since that one planet is constantly being invaded by alien life forms that have come to be known as Victim.

To stop the aliens and to allow people to land on Zion, mankind has developed the astronomical humanoid weapons, Ingrids, also known as Goddesses. G.O.A. (Goddess Operation Academy) is a school dedicated to the training of young men to pilot these Ingrids...

(Source: Tokyopop)

Megami Kouhosei

The Candidate for Goddess

女神候補生

Hoshino, Yukinobu

A science fiction manga series by Yukinobu Hoshino involving dinosaurs living in the present.

(Source: Wikipedia)

Blue Hole

ブルーホール

Miura, Kentarou

Buronson

Ourouden

王狼伝

Tanaka, Tatsuyuki

Undertrain is an experimental manga drawn by Studio 4°C’s Tatsuyuki Tanaka (Boiling Head) exclusively for Comickers. Those of you who are familiar with Tanaka’s works will recognize his style instantly. Even though there’s not much story in it, Undertrain manages to create a fascinating world filled with vivid details in only 16 pages. It’s as though you’re not looking at a manga, but a storyboard for an animated movie. 

(Source: MU)

Undertrain

When a miner on the industrial planet Chakra is attacked by an unknown animal yet somehow survives, Trouble Consultants Kei and Yuri are called in to investigate. How did the miner survive his wounds, and what are the ulterior motives of the company-town's superiors: the enigmatic religious leader, the town mayor, and the owner of the mining facilities? The answers will shock the two women and embroil them in yet another highly dangerous - and highly destructive - adventure!

Features the original cover and nine interior illustrations by Yoshikazu Yasuhiko, character designer for such anime as Mobile Suit Gundam and The Venus Wars, for which he was the writer, character designer, and director.

Written by Haruka Takachiho.

(Source: RightStuf.com)

Manga Like Steins;Gate: Aishin Meizu no Babel