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

When Akira Fudou tries to save Ryou Asuka from being attacked by the demon Oysnas, they are both mysteriously teleported back in time. Once they pass through what Ryou identifies as a "Timeslip," the duo discovers that demons have been invading the past in an effort to tamper with major historical events. It is Akira and Ryou's job to stop the demons from corrupting key figures in human history before they alter the course of humanity.

[Written by MAL Rewrite]

Shin Devilman

新デビルマン

Kikuchi, Hideyuki

Hosoma, Shinichi

In order to repair the synergy that was distorted by the evil deities in the ancient past, a young boy named Shuri has appeared in the present day. But the evil deities have set the "Groundskeepers" in place to stop him.

(Source: Akita Shoten, translated)

Jashin Sensen Restructuring Boy

邪神戦線リストラ・ボーイ

Mizusawa, Yusuke

Maki Hyousuke is a humble puppet maker by day, and a potent shaman by night. Follow him on his adventures through the dark depths of Japanese occultism and monsters, as he struggles to exterminate the many evil spirits that dwell in our realm.

(Source: Manga Reborn)

Mugengai

夢幻街

Maki, Kouji

Keiko Myoujin is the daughter of a wealthy businessman and engaged to a rich guy that one day ends up setting a scheme to kill her whole family. She barely survives, as Igor, a notorious scientist from her father's company transplants her brain to a mechanical body and 15 years later she sets out on revenge to kill the ones who robbed her of her life and youth.

Metal K

メタルK

Makai Gakuen

魔界学園

Mizuki, Shigeru

Written five years after Akuma-kun Sennen Oukoku, this one-shot tells the story of how the now deceased Akuma-kun has managed to take command of all the beasts residing in Hell.

With the minions of Hell on his side, Akuma-kun attempts to take over the human world and unite both dimensions as one. Naturally, the human world is not too keen on this idea and before long, Kitaro, with the help of all of Japan's Yokai, set about to stop Akuma-kun once and for all in an almighty battle!

Kitaro Tai Akuma-kun

鬼太郎対悪魔くん

Tanaka, Ken

Youkai Ningen Bem

妖怪人間ベム

Wazarai, Shizuya

America, 1885. Slavery has been abolished and African Americans are able to live freely. Yet, tensions still run high in the country—they are shunned by the majority of the white population and ruthlessly killed by the vicious Ku Klux Klan. Amidst this era of uncertainty, former heavyweight boxer Victor Freeman contends with prejudice while evading the law and bounty hunters looking to collect the high price on his head. Though charged with the murders of several white folk, the truth driving Victor's actions is much more horrific than any truly realize.

Hiding among the human race are intelligent, man-eating demons, who have assimilated themselves into positions of power and taken advantage of mankind's bigotry to fill their bellies. Having witnessed his father being brutally devoured by demons as a child, Victor vows to eradicate their kind for good. However, slaying them leaves nothing but a human corpse behind, effectively casting him as a cold-hearted killer. Regardless, with his robust arsenal and unparalleled boxing prowess, Victor soldiers on to destroy demonkind—even if doing so will turn the world against him.

[Written by MAL Rewrite]

Blaster Knuckle

ブラス・ナックル

Tamura, Yumi

A collection of one-shots by manga-ka Tamura Yumi.

X-Day:
4 short depictions of tragic misunderstandings and their consequences.  

4nin no Onna:
A very famous, rich, old hotel owner is found dead and when the police come to investigate, his long-time maid says that her master was killed by 4 women...

Kanojo wa Dare wo Koroshitaka:
A woman is found covered in blood walking through the streets of Tokyo.  When questioned by a policeman, she utters that she has killed someone.  To figure out what happened, the officer begins to read her intriguing diary...

Hirotta Otoko:
The five members of Maki's family are so picture perfect that they even star in heart-warming commercials advertising food and a happy, loving family.  But what are they really like beneath the surface?  They're forced to find out when they pick up a mysterious guy named George, who they almost run over by car on their way to their winter lodge...

X-Day

エックスデイ

Shimizu, Aki

Okuse, Saki

Three centuries ago, a vampire by the name of Migiri was running a reign of terror across Japan when a hero named Naonosuke Kobayashi cut off his head and sent him to eternal rest... until now.

(Source: Tokyopop)

Yato no Kamitsukai

Blood Sucker: Legend of Zipangu

夜刀の神つかい

Otomo, Katsuhiro

Kon, Satoshi

Collection of four stories by Satoshi Kon:

-World Apartment Horror
Manga adaptation of Otomo's self-directed live-action film of the same name.
A bumbling Yakuza member is sent to rid an old and rotten apartment block of its foreign occupants, but finds it a lot harder than expected when he discovers an evil spirit still resides there.

-Visitors

-Waira

-Joyful Bell

Manga Like Megami Ibunroku: Persona