Yamagishi, Ryouko

Historically, Prince Shoutoku Taishi lived from 574-622 AD and united Japan under the centralized government of an emperor. Known by his real name in the manga, Umayado, he is a cold and calculating politician and mystic that uses his beauty and cunning intellect to manipulate those around him. Umayado's only weakness is Emishi, the son of a rich family who Umayado finds himself hopelessly attracted to.

(Source: ANN)

Hi Izuru Tokoro no Tenshi

日出処の天子

Saitou, Takao

Koike, Kazuo

For four decades, Golgo 13 has been the world's greatest assassin for hire - sometimes to settle a private score, and sometimes to change history!

His real name and nationality are unknown - but his legend is everywhere. G13 never fails a job, and never sees his clients again...

...unless they try and betray him!

Golgo 13

ゴルゴ13

Akaishi, Michiyo

Hime wants answers. How could her father, an expert driver, die in a car accident caused by his own carelessness? What about the mysterious note he left behind? What exactly is going on? Hime intends to find out!

(Source: MU)

Includes two one-shots:

The Act of the Star Theater
Going Through the Time

Hime 100%

Princess 100%

姫100％

Kamiya, Yuu

Dool and Tatsuki are a demon hunters. Living like ordinary people in the daylight, they secretly hunt down demons when they sense them. They find an old lady with a small girl with supernatural power. Tatsuki, as someone who is also a small child and has special powers, relates to the girl and tries to guide her to live happily among the people.

Suddenly they are attacked while talking, but are saved by another mysterious man. Tatsuki tries to get to know him, but finds out the reason that mysterious man has come is to seek revenge for someone he loved and that Tatsuki is the mans target.

Note: There is another story included at the back of the manga called Elnera. It is about a sea demon called Elnera and the love between a human boy and Elnera's daughter.

Yami wo Tsugumono

闇を継ぐもの

Aoike, Yasuko

The adventures of Agent Z, the newest recruit to Major Eberbach's alphabet soup of subordinates.  These stories take place in the Eroica universe, but they are serious espionage adventure tales and Dorian and his crew do not appear.

(Source: Eroica Fans)

Z ツェット

Originally written by Fujimoto Hitomi in a light novel called "Mangaka Marina Series" and its first volume is also made into manga by Taniguchi Amu. 

In the manga, the story started with Marina who is a manga artist, got a phone call from her friend in Paris saying that she found a paper with treasure map written on it in a book she found in Paris. While they were chatting on the phone, Marina heard her friend answer someone who was knocking on her door, following by the sound of her friend struggling and gun shots, then everything is silent.     

Concerns over this issues, Marina goes to tell her friend's mom about this and learns from her friend's mom that she just got a phone call from the police officer in Paris that her friend just got killed. Upon learning that her friend's mother has to go to Paris over this issue, she volunteers to go there herself, and is determined to investigate her friend's dead there.

Marina Koi Bouken

マリナ恋冒険

Yuki dreamed about a goddess along with 3 dragon gods. After that dream, she saw a dragon appears during the thunderous stormy night at her house. The next morning, she starts to notice that there is something wrong with her. She has a vision, and starts hearing people's thought. Soon enough her friend start acting strange and horrify incidents starts to occurs to her. 

Note: there is also 2 stories in the back of the manga. The first story is a spin-off for Maou no Kiza (魔王の刻) manga in the back of the manga. The 2nd story is called Dreamer Boy, which is about Taku and Yuki.  One day, they helped a boy and got a candy for a return. The candy wrapper has an instruction written there for Yuki and Taku to make a wish while eating candy and their wish will comes true. The next morning, Yuki found that Taku has became into a kid.

Seija no Mure

聖者の群れ

Two strange encounter with one unfamiliar name confused Rui. First she unconsciously blurted out when she saw a guy in her school, another time is when she heard a woman cries that unfamiliar name out just right when Rui saw the sword her father who is an archeologist shows it to her. With this sword Rui never know that it could transport her back to the old Japan where her father's troop is having a war with another. 

Note: Included in the back of this manga ,there is also an Omake which is a story about Tatsuki and Dule from Maou no Kiza (魔王の刻) This is a prequel story when Tatsuki is still a small kid that doesn't know about his power yet.

Hakuryuu Izayoi den

白龍十六夜伝

Miyawaki, Akiko

Jinguuji and his friend dread the idea of going to the school's nursing room. Why? It's because of the mean, cut throat "auntie" who is a school nurse works there. Letting her tend the student's wound will only make them more in pain because she's never be gentle with anybody. Jinguuji's luck is however run short when one day, he and his friend was asked by her to help do some paper works in the nursing room. Little did Jinguuji knows he have to get involves in something bigger than his normal student's life from now on.

Meitantei Hokenshitsu no Obasan

名探偵保健室のオバさん

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

Togashi, Yoshihiro

Fourteen-year-old thug Yuusuke Urameshi spends his days skipping school and causing trouble for the adults in his life. Yuusuke regularly engages in street brawls against rival Kazuma Kuwabara and ridicules his childhood friend Keiko Yukimura. Filled with self-loathing and the burden of an alcoholic mother, Yuusuke sacrifices it all in a split-second decision—he tackles a small child out of the way of an oncoming car, losing his life in the process.

Spirit guide Botan intervenes, allowing Yuusuke to see how the people in his life react to his death; he is moved by the emotional ruin his loss causes his mother, Keiko, and even Kuwabara. Additionally, due to his death's heroic nature, he receives an opportunity to return to life from the Spirit World ruler's son, Koenma.

Koenma hires Yuusuke as a "Spirit Detective" and tasks him with solving a series of increasingly challenging paranormal mysteries. Battling and befriending demons such as the beautiful Kurama and hostile Hiei, Yuusuke further develops and utilizes his skills as a fighter. But as dark forces move in the Underworld, Yuusuke struggles alongside his companions to defend everything he took for granted.

[Written by MAL Rewrite]

Yuu☆Yuu☆Hakusho

Yu Yu Hakusho

幽☆遊☆白書

Yuuki, Masami

In the near future, large mecha called Labors are made to assist in various reconstruction projects in major countries around the world that are being threatened by global warming. In Japan, the government has enacted Project Babylon in order to conduct land reclamation. Labors are also being pressed into police and military service aside from civilian use.

However, terrorists are now attempting to use labors to make themselves heard, as well as common criminals, thugs and guerrillas. The National Police Agency established the Special Vehicles Division, an all-labor task force to combat the potential use of labors for criminal/terrorist activities.

(Source: MU)

12 Manga Like Yasha