Adachi, Mitsuru

The story is set in a place very similar in appearance to Earth in the Edo period. However, Adachi (the mangaka) regularly reminds the reader all throughout the series that the setting is another planet in the distant future which just happens to look like Earth.

After the death of his mother, Shichimi sets out to join his step-brothers and -sister who live together in Karakuri Tenement, a place provided by the father they have never met. He finds out that each of them had different mothers (all of whom have died), but were fathered by the same man. Not long after Shichimi's arrival, the siblings decide to journey to visit the graves of each of their mothers. On this journey, they encounter many dangers.

(Source: Wikipedia)

Nijiiro Tougarashi

虹色とうがらし

Nagai, Go

Soft-hearted Akira Fudou has always been somewhat of a pushover. When he reunites with his childhood friend, Ryou Asuka, in a fateful encounter, Ryou reveals to him the terrifying reality of his father's research: demons exist and are planning to claim possession of the earth once again.

Eager to help his friend save humanity, Akira agrees to attend Black Sabbath, a party filled with depravity and corruption, to attempt to merge with a demon. A near-death encounter causes him to unify with Amon, a demon feared amongst even his own kind. Together they form Devilman, a combination of Amon's strength and Akira's pure heart.

After uniting with Amon, Akira begins to fight against the demons with his newfound power, desperate to stop the downfall of all human civilization.

[Written by MAL Rewrite]

Devilman

デビルマン

Manabe, Jouji

Rai is a space opera that fuses feudal Chinese and Japanese customs with vast galaxy spanning empires and space-going societies. The story follows the life and times of the samurai Rai, and the quest of several spacefaring factions for control of territory and, of course, the Empire.

Ginga Sengoku Gunyuuden Rai

The Heroes of Galaxy Wars

銀河戦國群雄伝ライ

It`s face-to-face confrontation when Kahm stares down her father and refuses to end her relationship with Tetsuya. In retaliation, her father sends a punitive fleet to Earth -- with orders not only to crush the rebellion but to annihilate the entire solar system!

(Source: Amazon)

Outlanders

アウトランダーズ

Aoyama, Goushou

1-3. Tantei George no Minimini Daisakusen (Detective George's Mini Huge Cases)
4. Play It Again
5. Excalibur
6. Natsu no Santa Claus (Santa Claus of the Summer)
7. Chotto Mattete (Wait for A Little While)
8. Sunday 19 Show: Samayoeru Akai Chou (The Wandering Red Butterfly)

Aoyama Goushou Tanpenshuu

Gosho Aoyama's Collection of Short Stories

青山剛昌短編集

Takemiya, Keiko

Mitsuse, Ryu

Cosmoralia's Prince Ithaca is about to wed Princess Lilia of Ayodoya and be crowned Astralta III. The apparently favorable celestial bearings mean he will be no mere monarch but holy king of a new "papacy." Alas, the peaceful inhabitants of Planet Astria have no clue that they're next in line for invasion by a ruthless machine force—a threat that seems to metaphorize the inherent perils of politics and desire in the multi layered saga.

Andromeda Stories

アンドロメダ・ストーリーズ

Katsura, Masakazu

1. Zetman
2. Shin-no-Shin: Ai to Nikushimi no Time Slip (Shin-no-Shin: A Time Skip of Love and Hate)
3. Woman in the Man: Otoko no Naka no Onna
4. Shadow Lady (pilot)

Zetman

ZETMAN―桂正和短編集

Iwata, Kazuhisa

Something monstrous rises up from the sea and nearly sinks a Japanese fishing boat. The sole survivor tells a tale that no one wants to believe. 

But when a Russian nuclear submarine is destroyed in the same waters, the world is forced to face the truth: Godzilla has returned! This manga classic was originally published by Dark Horse in black and white in 1988

(Source: MU)

Godzilla

ゴジラ

Obata, Takeshi

Sendo, Susumu

In a world where djinn rule and humans are enslaved, Toto and Loukir break the seals of the century-old prison of the "gentle genie," Rampou, in order to try and save their country...

(Source: Deja-vu)

Arabian Lamp Lamp

魔神冒険譚〈アラビアン〉ランプ・ランプ

Huang, Yu Lang

In the year 2049, the Earth has settled into a period of relative peace, thanks in large part to the global efforts of GUTS--the Global Unlimited Task Squad--an international alliance dedicated to protecting mankind from threats within the planet and beyond. But when a mysterious meteor carrying an ominous message crashes next to GUTS headquarters, it heralds the end of peacetime and the return of the giant monsters that terrorized humanity many millions of years ago. Mankind's only hope is to find the lost land of Tiga and reawaken the 160-foot-tall warrior Ultraman!
 
(Source: MU)

Ultraman Tiga

Kikuchi, Shouta

Sugata Sanshirou has been studying martial arts in the  wilderness, becoming strong and fast. When Sanshirou’s grandfather tells of a promise made long ago to a family friend he tells Sanshirou it is time to go to the city and meet the girl Sanshirou is engaged to. It’s a shock, but Sanshirou goes to the city.

Toyotomi Sanshirou is a young man with some fighting experience in the city, and some training thanks to his grandfather’s doujo, but he’s not really into it – although he won’t back down from a fight or from defending his family’s honor. He comes home one day to find his sister Mifumi arguing with his grandfather about an arranged marraige to a boy with the same name as him. He believes this is his way out of being the top fighter in the doujo and he welcomes the pending arrival of this new Sanshirou as his ticket out of there.

Okay, two problems (and you knew that they would be there). One, Sugata Sanshirou is a girl, and two, she’s determined and honor bound to become the wife of the only son at the Doujou – namely, Toyotomi Sanshirou.

Oh, and one more thing – she’s stronger than everyone else at the Doujou combined. Perhaps stronger than everyone in the city combined…

(Source: Animeraider)

Sanshirou²

三四郎2

Sakai, Takayuki

Time-travellers from the 22nd century return to present day Japan to warn the world that Godzilla will soon return, and his rampage will be so great that the country will never recover. With the help of a non-fiction writer who has accurately guessed the true origin of Godzilla, the people of the future offer to return to the past and prevent Godzilla's birth. However, upon returning to the present they find that Godzilla has been replaced by an even greater threat; The three-headed demon King Ghidorah! How can the world survive without the King Of The Monsters to face this new terror?

12 Manga Like Sakura Yuki