The Zaku, "The Father of all Mobile Suits", a title bestowed on to this mobile suit long after its creation & deployment to the battlefield; but this is not the story of the Zaku's exploits during the Zeon War of Independence, later called the One Year War. Neither is it the story of a new type of piloted, independently powered mobile machine. A machine that would be powered by a state of the art thermonuclear reactor, but due to the secrecy and inherent danger involved in developing a project of this kind, its development was outsourced to Hosioka, a small steelworks industrial plant and its employees, this is their story.

In the midst of a terrorist attack that kills all his classmates,Tohru Kuroe knows the chances of seeing yet another woman die makes Tohru pick up an abandoned gun - The beast awakens; taking over. When Tohru comes to his senses, he finds he is now a killer. Finding out he was genetically engineered to be a killer, his codename is D-17, Tohru continues his 'normal' life amidst challengers threatening his life and those around him.

Above the Earth, there is a continuous battle between angels and devils. One devil in particular, Sword, has it in for a certain angel, Ios. In their 101st fight together, both are severely wounded. Not only that, but their clashing power causes the two to fall to earth. By chance, Sword finds a beaten, unconscious teenage boy nearby, and he is able to take over the human's body to save his own life. Some time later, Sword awakens in the hospital, briefly confused about his whereabouts. The father of the body he possessed enters the room, extremely happy to see his boy Souma alive. Then the older twin brother shows up. Immediately, Sword recognizes his enemy's energy. Also nearly dead, Ios had joined with Kanna's body. Sword goes to attack Ios, but quickly realizes that the body is far weaker than his demon form, especially from being recently beaten to hell. Since the brothers had been found heavily thrashed, their memory loss isn't that surprising. Their large change in behaviors is also explained by amnesia. As it turns out, Sword entered the body of the cliché nerd who can't run fifty meters without falling. Ios's new body is a terror, feared by all and constantly suspended from school. While the angel and devil have primary control over the bodies of the twins, reflex actions and memories of the other souls (still alive within the bodies) do appear. More importantly, the human bodies cannot handle the powers that Sword and Ios had used with ease. This a problem especially for Sword who is both over eager to use his powers and targeted by devils and angels. Taken from doushi-sumeragi.net

Akuma-san, listen to my song!
The boy who was kicked out of the choir and the devil, who became a singing teacher for the child.
But the song is not easy...
Funny relationship devil and child.

A certain boy decides to summon a demon to help him with the search of his beloved...

Debochi Amon (14) was always a passionate boy and had a tendency to literally steam up. Amon was living a normal life; going to school, hanging with friends and thinking about his crush on his classmate, Shinomoto Sako. One day, a third eye opens on his forehead after one of his usual “steaming” incidents and a talking owl creature who calls himself Goomin appears. Both characters are confused at the situation at hand and Goomin finally is able to explain the situation to Amon. Amon now possesses Pyrokinesis and his power of his fire increases when his passion grows. His emotion of wanting to protect something, like his crush Shinomoto, triggers the transformation into a demonic figure and his flame is powered through greed. Now, Amon must learn to control and use his powers to protect the human world from Angels!

I am Beelzebub, the King of the Devils that stands tall over all others. But after being betrayed by my subordinate and killed, I was reincarnated. I was definitely supposed to be born again as a devil…! But I can’t even spea… ababubaba…! The almighty Beelzebub is now a human child?!

A childhood trauma has left Kusakabe Noboru, a college freshman in Tokyo, afraid of women, especially those with big breasts. Talking to them, let alone touching them is out of the question and it is no surprise that he is still a virgin. After another failed night to talk to girls with his one and only friend Takahashi, the two spot an incredibly large building called the Devil Ecstasy. They learn that it is a brothel and Takahashi convinces Noboru to use this opportunity to lose their virginity.

As the two pick out the girls, Noboru notices Meruru, a cute flat chested girl and chooses her while Takahashi picks the sexy Celine. Noboru’s fear of girls kicks in and nothing happens while Takahashi leaves happy. But when Takahashi dies the next day under unusual circumstances, Noboru learns the terrifying truth that the women at Devil Ecstasy are all succubi, waiting to suck the mojo and life out of the men who dare approach the brothel!

Kinda creepy. Dante, the main character, is fighting various characters to keep the passage to the demon world sealed, but he doesn't seem to be having much luck... (And the story says 'To be continued' at the end, so there might be more to it.)

The manga tells a spinoff story from the viewpoint of the mysterious man V.

On the last day of my 19, an ill-willed school violence brought my life to a halt. And I returned to the past. So I decided to be the 'Malice' wiping out the evil.

Narumi Detective Agency is where the people of very early modern Japan go to for help with mysterious and supernatural cases. But Narumi is just the face and occasional fist of the operation—the real hero is Kuzunoha Raido, the devil summoner, a stoic young man who seems to seek no credit for his accomplishments. As a powerful devil summoner, Raido can call upon many different demons to assist him in solving cases that deal with other demons causing harm in the human world.

Lately, there has been a surge of cases. A powerful summoner seems to be behind all these incidents. Is the Narumi-Raido combo—plus the latter's talking cat familiar—strong enough to overcome a demon force more powerful than anything they have experienced before?

From MangaHelpers: The Comp is a popular portable game system that also functions as a smartphone. But it suddenly becomes a portal for demons to travel to the human world! Kazuya receives three Comps, from his master programmer cousin Naoya, for himself and his two friends Atsuro and Yuzu. In order to survive the demon invasion, the trio have to use the Comps to summon and subdue the demon that appears in order to fight back against the waves of demons that are about to swarm Japan! [vyc]

The setting of Devil Survivor 2 spans the whole country of Japan. It tells the story of Japanese high-school students who receive emails from a website foretelling their friend's deaths. Mysterious creatures invade the country, and the students enter a pact, enabling them to summon demons from their cell phones with a special Devil Summoning App.

While Japan in desperate situation, 13 "devil survivors" cut deals with devils to obtain abilities to fight against unknown invaders with only 7 days left until a world catastrophe, you need to make crucial decision to survive...

Jeong-Hwan received a letter from his sister Ji-Yeong that said, "Please rescue me, the devil is here!"

His sister goes to an all-girls school and in order to rescue her, he must disguise himself as a female student. In this school, all students are candidates to become "the bride of the devil."

After many years of living alone in a deep forest, the devil has gotten lonely. He decides to buy himself a human bride to cure his loneliness as well as help him shed his devil identity. But when his new, beautiful young bride dies suddenly after only a few blissful days, the devil decides this time to build himself a bride. First on his list of items to acquire for the construction of his perfect mate: eyes... **THIS KOREAN MANWHA IS READ FROM Left to right**

Devil's Candy is a webcomic about 14 year old Kazu, a kind and optimistic young imp living in a setting populated by devils. Working last minute on a science project with some help from his best friend Nemo, he creates Pandora: a stoic zombie girl confused by the strange world she's been brought into. Now living together with her creator, the comic describes their daily struggles of day to day life in a devil's world.

From Aka Roze Tenshi:

Sara is a member of the Heaven Expedition Team, and her job is to hunt Devils, but she hasn't caught even one devil yet and if she doesn't catch one she will be expelled!

She decides to summon a devil so she can catch him, but what will happen when she meets the charming devil Rembrandt?

Also contains:
Midnight
Blooming Love

Following each chapter is a small side story. The fourth side story remains untranslated.

Her brother ran away with the president's fiance. She was too late to escape and she was captured. She began her miserable life as a 99-day contractual lover...