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

Aki★Eda

Over one thousand years ago, Yukari Yakumo led various youkai from Gensokyo to war against the Lunar Capital, which unfortunately resulted in the former's one-sided defeat. Since then, Yukari has been devising a plan to attempt conquering the moon once again.

After a long time waiting, Yukari is finally ready to make her move. Enlisting the help of Scarlet Devil Mansion's vampire mistress Remilia Scarlet, Hakugyokurou's manager Yuyuko Saigyouji, and shrine maiden Reimu Hakurei, will Yukari at last be able to penetrate the Lunar Capital's impregnable defenses?

[Written by MAL Rewrite]

Touhou Bougetsushou: Silent Sinner in Blue.

東方儚月抄 Silent Sinner in Blue.

Kara

Lee, Yunhee

The only Angel Princess of Heaven is betrothed to the Emperor of the Underworld. Unable to accept her future with the Demon King, she realizes that her only choice is to run away. Her plan is to join the human world disguised as a schoolboy! Now all of the Gods from Heaven and Hell are searching high and low on the earth trying to make sure that a wedding happens. 

(Source: MU)

Angel Diary

천행기

Toboso, Yana

Tucked away in the English countryside lies the ominous manor of the Phantomhives, a family which has established itself as the cold and ruthless "Queen's Watchdog" as well as the head of London's criminal underground. After a tragedy leaves the Earl and his wife dead, many are shocked when their son, a young boy named Ciel, claims his place as the new Earl of the Phantomhive house. At first, many perceive him only as a child surrounded by a few eccentric servants. But they soon begin to realize that it is foolish to meddle with Ciel and his demonic butler Sebastian.

Taking place at the end of the 19th century, Kuroshitsuji follows these two as they face countless mysteries and dangers that plague England and threaten the Queen, uncovering the truth about what really happened to Ciel's parents in the process.

[Written by MAL Rewrite]

Kuroshitsuji

Black Butler

黒執事

Asou, Shuuichi

Kusuo Saiki is not your typical high schooler—behind his glasses, pink hair, and antenna-like appendages exists a being of unfathomable psychic power. Telekinesis, teleportation, and astral projection might sound exciting to the average person, but from Saiki's viewpoint, they are nothing but an annoyance. Psychic powers are unnecessary—this is all that Saiki has believed since he was a kid.

As a secret esper with the sole dream of living an ordinary life, Saiki tries to use his psychic abilities to stay out of the public's gaze. However, having to clean up after his odd classmates and their antics, all the while keeping his psychic powers a secret, makes it rather difficult to achieve the peaceful life he desires.

[Written by MAL Rewrite]

Included one-shots:
Volume 1: Chounouryokusha Saiki Kusuo no Ψ-nan (pilot)
Volume 2: Omaenchi, Obake Yashiki
Volume 3: Gekidan! Improvisation
Volumes 4, 6: Saiki Kusuo no Ψ-nan &amp; Ansatsu Kyoushitsu: Korosense VS Saiki Kusuo - Iruma-shi Saishuu Kessen
Volume 12: Terrace House Dust
Volume 25: Seishounen Yuugai Kankyou Kiseihou

Saiki Kusuo no Ψ-nan

斉木楠雄のΨ難

Tamura, Ryuuhei

Ishiyama High—land of the delinquents. No matter how tough you think you are, you don't mess with an Ishi-high student. One of the most infamous students is first year Tatsumi Oga, called "Demon King" by those he's defeated. 

One day, while Oga is finishing off a gang that attacked him, he stumbles upon an infant. In a rare moment of kindness, Oga tries to care for the baby. As a result, the child becomes overly attached to him. In a panic, he brings the baby to his best friend Takayuki Furuichi's house. While there, they are attacked by Hildegard, a demon maid who says the baby is actually Kaiser de Emperana Beelzebub IV. She also reveals that he was sent here to destroy humanity, on a whim of his father Beelzebub III, Great Demon Lord of the Demon World. After failing to remove Baby Beel from Oga, she declares that he must raise him, as moving more than 15 meters away will result in instant death for Oga.

With his delinquent past and unfriendly nature, Oga must deal with the burden of raising a demon baby. Beezelbub follows his story through encounters with demons and dangerous classmates, all while being an unorthodox role model and carer for the young Baby Beel.

[Written by MAL Rewrite]

Beelzebub

べるぜバブ

CLAMP

Six years ago, Kamui Shirou and siblings Fuuma and Kotori Monou were inseparable childhood friends. After the sudden, gruesome death of the Monou siblings' mother, Kamui was taken away from Tokyo by his own mother. In the years that passed, the two lived peacefully while Kamui strengthened his innate telekinetic abilities. When his mother passes away in 1999, her dying wish prompts him to return to Tokyo to face his "destiny."

When Kamui reappears in the city, his attitude has taken a drastic turn, and he displays the growth of his powers through violent confrontations in the streets. Various opponents come after him asking if he is "Kamui," but they seem to be demanding something far more significant than his name. These fighters represent two opposite factions—the Dragons of Heaven and the Dragons of Earth—who each wish to recruit him to their cause. Piecing together clues about the apocalyptic "promised day," Kamui realizes that he holds the fate of the world in his hands. Depending on which group of Dragons he allies himself with, he can either choose to save the world—or end it.

[Written by MAL Rewrite]

Ananas

C.R Jade

At the Palace of Yeomra in the afterworld, Jae-shin, the enchantingly beautiful yet deeply hedonistic son of the king, faces dire punishment. Having tampered with two men's lifespans, this alluring half-human, half-ghost is banished to the mortal world, where in daylight, he is stripped of his power and appears as a mere white puppy. The only way to return to his true form is to win over the heart of a human.

As if by fate, Lee Nok, a wistful and unfortunate prince pining for his childhood friend, takes pity on the animal and brings it in. While Nok's abundance of yin energy attracts malevolent spirits, Jae-shin must absorb yin to sustain himself. In every respect, Nok is the perfect target for Jae-shin's goals. He begins visiting the prince's chambers at night in his human form, hoping to erase the traces of affection for another from the prince's heart and lure him into eternal love.

[Written by MAL Rewrite]

The Ghost's Nocturne

귀야곡

Sumiyoshi, Ryou

Makoto has always had twisted desires. Outcast from a young age due to his abnormal hobbies, he attempts to summon a demon to fulfill his wildest fetish—to feast on its guts. What he wasn’t aware of, however, was that he would summon the charismatic and dangerously beautiful Archduke of the Demon World, J.

J offers him any wish in exchange for his soul, and Makoto is finally able to make his most wicked desire come true. However, the chatty Archduke takes a liking to the terrible Makoto and turns him into a demon—vowing to raise and adore him in Hell. Makoto must now learn the delicate etiquette of the Demon World or suffer the consequence of his ignorance: having his soul ripped apart.

[Written by MAL Rewrite]

MADK

Iwashiro, Toshiaki

Ageha Yoshina is a self-confident high school student who helps others for a fee. On his way back from a job, he finds a strange calling card with the word "Psyren" imprinted left behind in a phone booth and decides to keep it, unaware of its purpose. The very next day, Ageha discovers that his classmate Sakurako Amamiya has the exact same calling card in her possession. When he questions her, Sakurako asks him to save her, signaling the day his troubles begin.

Confused by the circumstances of this encounter, Ageha realizes something is wrong when Sakurako goes missing. In an attempt to figure out what is happening, he decides to call the number provided on the calling card and is asked a series of questions by a mysterious voice, ending with a final, cryptic question: "Would you like to go to Psyren?" Thus begins two teenagers' participation in a game of life or death within a strange world inhabited by monsters called Taboo. Granted the ability to use psychic powers known as PSI, the duo fight to return to the place they call home.

[Written by MAL Rewrite]

Psyren

PSYЯEN -サイレン-

Kubo, Tite

Narita, Ryohgo

Follows the events during the seventeen month timeskip after the Aizen battle, involving the eighth generation Kenpachi and a revived Szayel Aporro Granz.

Bleach: Spirits Are Forever with You

BLEACH Spirits Are Forever With You

Fujita, Kazuhiro

Ushio to Tora centers around the travails and battles of Ushio Aotsuki, who is constantly being stalked and aided by a gigantic, supernatural and sometimes invisible tiger-like monster.

Ushio's family maintains a Shinto temple in Japan, where ~500 years ago, his samurai ancestor battled that same tiger to a standstill, and eventually trapped him against a rock using a blessed spear called the "Beast Spear," which in addition to its intrinsic formidability as a weapon, can also endow its wielder with the martial ability of the ancestor who originally wielded it.

Ushio accidentally unsealed the cave Tora was trapped in. Initially, Ushio refuses to remove the spear pinning Tora down, but Tora's unsealed presence summons various monsters who wish to fight him, and by extension Ushio. Ushio is forced to free Tora, who would like to eat Ushio, but dares not since Ushio keeps the spear close by. The series focuses on their relationship, interspersed with battles against mythological foes, and with Tora's attempts to grapple with modern life.

(Source: Wikipedia)

Manga Like Touhou Bougetsushou: Cage in Lunatic Runagate.