Miura, Kentarou

Studio Gaga

Guts, a former mercenary now known as the Black Swordsman, is out for revenge. After a tumultuous childhood, he finally finds someone he respects and believes he can trust, only to have everything fall apart when this person takes away everything important to Guts for the purpose of fulfilling his own desires. Now marked for death, Guts becomes condemned to a fate in which he is relentlessly pursued by demonic beings.

Setting out on a dreadful quest riddled with misfortune, Guts, armed with a massive sword and monstrous strength, will let nothing stop him, not even death itself, until he is finally able to take the head of the one who stripped him—and his loved one—of their humanity.

[Written by MAL Rewrite]

Included one-shot:
Volume 14: Berserk: The Prototype

Berserk

ベルセルク

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

Kon, Satoshi

As a conclusion to his serialized work Resonance, mangaka Chikara Nagai plans to kill off Lin, one of the most important characters, in an unexpected turn of events according to the popular view. Following a session of mostly negative feedback from his editor, Nagai faces yet another sleepless night drawing the last few panels of his manga.

In drowsiness, he discovers a furious Lin escaping after stealing the manga spread where he dies. Before Nagai can process anything, he gets sucked into the world of his own creation and finds himself amid a fight scene between the heroine, Satoko Miura, and the villain, "The Masque." Unable to distinguish between dream and reality, Nagai works with Satoko to search for an alternate ending to the manga, so he can find an exit and return to the real world.

[Written by MAL Rewrite]

Opus

OPUS

Takada, Yuuzo

Through a strange series of events, a young man named Yakumo Fuuji becomes the immortal slave of the last of a race of 3 Eyed immortals. The immortal, Pai, absorbs his soul to save his life, making him immortal in the process. Now, he begins a journey with the female immortal in an attempt to find a way of becoming human. Of course, there are many complications along the way, not the least of which being that the immortal is a female with a split personality, one achingly cute and the other being no-nonsense destructive power, and romances that develop between.

3x3 Eyes

3×3 EYES

Miyao, Gaku

Kazan, the only survivor of the Red Sand clan, embarks on a journey to find the water demon that destroyed his people and kidnapped his best friend Elsie. Accompanied by his eagle companion and helper, Kazan meets a mysterious girl by the name of Fawna who has the power to create water from her hands.

(Source: ANN)

Kazan

KAZAN -カザン-

Terada, Katsuya

"The Japanese title of this manga is Saiyukiden Daienoh, meaning "Legend of the Journey to the West: The Great Monkey King." Katsuya Terada's manga is itself an adaptation of a sixteenth century Chinese novel entitled Xi You Yi..."

(Source: Dark Horse)

Saiyuukiden Daienou

The Monkey King

西遊奇伝・大猿王

Ogata, Tei

Once upon a time, there was a tribe that fought for the empire. They were feared by everyone. Their specialty was destruction and slaughter. They were called "kimera." Rin was one of them. She lived in a peaceful village until the war broke out. And at that moment, something within her began to awaken, and something beyond imagination began!

Kimera

キメラ

Kaneko, Shinya

Najaran is a young woman who just happens to be an apprentice Cepter. Cepters have the power to summon creatures from magical cards. Once, these cards were collected in a book called the "Culdcept." During an ancient battle, the book was destroyed—its cards scattered far and wide. Najaran's master gives her a dangerous mission—she must obtain information about the Black Cepters and their nefarious plans. If the Black Cepters rebuild the Culdcept, the arcane book of ages past will grant them unspeakable God-like powers!

(Source: Tokyopop)

Culdcept

Aikawa, Yuu

There are rumors of a grand treasure located within the local museum of Ashiwara and that this treasure requires a special key to unlock. But no one seems to know what this treasure is or even what the key looks like.

But Kei and Hikaru, two childhood friends, may inadvertently find out when someone seeks to claim the treasure for themselves and that action plunges their world into chaos.

Wizards Nation

ウィザーズ・ネイション

Kishiro, Yukito

On a small island in the vast ocean of Marmundo lives an old man and a little boy, Arrabarus and Ashika. They are the guardians of a lighthouse, which stores a mystical light they call Niselle. One day, the boy rescues a young knight, lady Ruliya, who was swept off course during a storm. Promising her savior anything as thanks, Ruliya immediately regrets it as Ashika wants to become a knight as her. The little boy decides to become her squire, but first his father challenges her to a duel. While they're fighting, Niselle is stolen by the genius Alcantara, who also kidnaps Ashika. In the battle, the lighthouse is destroyed and by some mysterious connection this kills Arrabarus. Tagmec, knight of the Underworld, emerges from the sea to claim the old man, but not before Ruliya promises to rescue the boy and the light. Tagmec informs her she is embarking on a quest of destiny. He grants her Muertogara, magical blade.

(Source: Wikipedia)

Aqua Knight

水中騎士

Tanaka, Masashi

It tells the strange story of a man riding a car and holding a book in his hands, looking for the "princess" of the book he's reading.

Mikakunin Prince Buttai U.P.O.

未確認プリンス物体 U.P.O.

Yasuhiko, Yoshikazu

The young Arion is tricked by Hades and is taken to the underworld where he is trained to become a warrior strong enough to defeat even a god. Thrusted into a war among the Titan brothers, Arion embarks into a colossal saga towards the Olympus, home of Zeus.

This is the story of Arion, a little boy raised by only his blind mother in a barren land. One day a man comes to visit his mother. This man calls himself Arions uncle and Arions mother calls the man Hades. The uncle convinces Arion that he knows where Arion can get a hold of a special herb that can cure Arions mothers eyes, and so the boy willingly comes with his uncle Hades on a journey. The moment Ariona agrees to go, his mother feels it in her heart and rushes out of her little house and screams at the sky ; Zeus, your brother is taking Arion to the land of the dead. Follow Arion on his adventures among old greek gods and godesses.

(Source: ANN)

12 Manga Like Maryoku Kare no Dark Elf