A collection of short stories:

-Stroboscope
Kazu, the owner of a run-down coffee shop, becomes the inadvertent host to Renji, a young man who perceives Kazu's hunger for the touch of another person. The pain of this realization only increases the torment of Kazu, who has long ago given up on his longing for love. [Warning: Talk of a suicide attempt.] - Must be Endless

-Chain Gang
Always together, one man drinks at another man's home when he can't catch the last train home, but what is this feeling of deprived freedom? - Yaoi is Life

-Good Morning, Bad Day

-Devil's Thoroughbred
Kinaga-s act of kindness and friendship is repaid in the most unexpected way. Yamashita Tomoko's pre-debut work! - Echochi Scans

Hino is your average high-school student. Sakuba is an amazing, talented, honor-roll student. But when Hino discovers Sakuba's secret half-demon identity, his life becomes anything but ordinary.

A long time ago, the Earth was ruled by demons. The demons constantly fought each other for survival, but soon found themselves fighting a new race of beings: The first humans. The demons then became imprisoned in ice after a great cataclysm. They would remain there until the ice melted, after which it was said Satan would rise and lead them in Armageddon. That time has come.
Akira Fudo, who has become the Devilman, the only being who can fight demons; a being possessing the powers of a demon and a soul of a man.

A manga adaption of Devilman partly based on the 70's anime.

A Mercedes-Benz SLR car ad by Go Nagai featuring Devilman.

When demons begin taking over the bodies of humans, only the strongest survive. When a practicing young witch named Miki Makimura asks her friend Akira Fudou for help with a ritual, the spell is interrupted and Akira is left on the brink of death. His body is overtaken by a powerful being named Amon. Now torn between his humanity and the demon within him, Akira uses his abilities to fight in the war between demons and humans for the future of the world itself!

Fudou Jun is a highschool teacher and takes a trip with a group of students. While there, a group of martial artists staying nearby take a strange interest in the girls.
These men are actually demons and after changing into their true form break into the cabin to rape the girls. One gets Jun and violates her.
She feels her soul being torn apart and transforms into Devilman Lady. With newfound powers and strength she kills all the demons and protects the girls from any further harm.
What are these demons and why did she turn into a hybrid of one? What does this mean for her and for the rest of humanity?

Some more stuff to add to the Devilman mythos. This is Kinutani Yuu's second story about Go Nagai´s work.

Set in 2025, a roboticist named Fudou Yuuki joins a project involving a large mural depicting humanity's true past as well as the ancient but advanced technology found in Antarctica.

After the world ended in the original Devilman, Akira Fudo is in hell, seeking the soul of his beloved Miki while at the same time Doctor Hell is beseeching the underworld for power in order to get his revenge upon the hated Mazinger. Akira sets in motion a chain of events that earn the enmity of Hades himself, who'll stop at nothing to avenge the slights Akira commits against him.

After the world ended in the original Devilman, Akira Fudo is in hell, seeking the soul of his beloved Miki while at the same time Doctor Hell is beseeching the underworld for power in order to get his revenge upon the hated Mazinger. Akira sets in motion a chain of events that earn the enmity of Hades himself, who'll stop at nothing to avenge the slights Akira commits against him.

He is the "Devil", who loves flowers. All girls feel loved when he's around. It was all the same for him until he saw a crying girl that ran into his garden. He though she was like any other girl, but eventually she was the prettiest flower he ever saw...

Anzai, half vampire, and Tsukasa, a normal school girl.
Vampires seem to be living among humans. Of course the government does not know of their existence, because their appearance does not differ from humans. They also do not need to drink blood, but when they get a craving or get angry, they can become uncontrollable monsters.

Madogiwa is an all-time bottom rank employee of a demon trading company that lends their powers to humans.
His client in the human world turns out to be…a little young boy?!
The strange duo goes off to rake in the money!!

(Source: shonenjump.com)

Born as an illegitimate child to the duchy, Estelle became the saint of the empire.

She spent her entire life trying to love everyone around her, but being betrayed and sacrificed to the devil, Estelle suffered in hell for 600 years.

[Do you desire revenge?]

[If you wish, I’ll send you back to their brightest moment. What do you think?]

The whispers from the devil reached her ears.

Holding the devil’s hand, Estelle came back from hell.

As the lady of the Garnet Duchy, the greatest family in the entire Empire.
To bring cruel destruction to all who betrayed her.

“I’ll steal everything from my enemies and make them meet their worst endings possible.”

In Dhaldot, a rural town located in eastern Europe, two kinds of people coexist together.

The story takes place in modern day and follows two brothers Alkade and Isaac, the sons of the first Vampire ever. Their father was murdered by a secret Clan of Vampires called the Clan of Genesis. The leader is a Vampire named Sethos and he hid in the shadows of history and turned the greatest warriors and tyrants into powerful Vampire Lords. Achilles, Lancelot, Genghis Khan, Cleopatra, and even Morgana are generals in his Clan. Once he had sufficient military might Sethos attacked and killed their Father becoming the rulers of the Shadow World. The World that exists alongside the human one, it is split in half and ruled by a Vampire Clan and a Werewolf Clan. The brothers are no ordinary vampires, they share something very special. Alkade is a BloodWolf, a hybrid creature of a Vampire and a Werewolf. Isaac is a Dhampyr, a hybrid creature of a Vampire and a Human. This is a tale of monsters and their journey to become Kings.

Man's true worth is to entertain the beauties of the world. Summoned in a different world called Romless, the college student Simon Claud (or Shimon Kurando) aim about women, treasures and adventures runs around the labyrinths, deserts or cities. Young ladies, princess knight, beast girls, elves or woman assassins, I'll get them all! The most absurd dark fantasy is now unveiled. Men must adventured until the death!

On planet Di Gi Charat, little Digiko was a pampered princess. Now living on Earth, the green-haired moppet is working for minimum wage at a hobby shop in Japan. Who ever said it was easy being cute? Based on the popular anime series, Di Gi Charat also features bratty Usada, shy boy Minagawa, and Digiko's wacky companions Puchiko and Gemo!