Youkai are specters who have lived in the human world since the dawn of time. They often rest peacefully in their dwelling places, until humans rouse them by inconsiderate actions. Kitaro is a young youkai boy who wants to help humans and youkai live in harmony, and he fights to protect humans from the enraged youkai who lash out at them.

Note: For Kodansha's version of the series that began in 1967, the first volume is titled "Hakaba no Kitarou," but volume 2 and upwards are titled "Gegege no Kitarou."

English Titles
Vol. 1: Kitaro
Vol. 2: The Birth of Kitaro
Vol. 3: Kitaro Meets Nurarihyon
Vol. 4: Kitaro and the Great Tanuki War
Vol. 5: Kitaro's Strange Adventures
Vol. 6: Kitaro the Vampire Slayer (January 2018)

Taken from Coffee Scans: A village, hidden in the forest, holds mysteries… But what happens when a foreign girl enters it?

The fantasy masterpiece, which once caused an uproar in Korea with more than 10 million copies sold, is now in the public eye again as a webtoon.

Hyun-Am trains in Tai Chi Qigong in order to fight the water ghost that killed his sister.
Father Park, unable to save his friend’s daughter from an unknown evil spirit, chooses to become a priest walking the path of asceticism.
Jun-Hoo, the only survivor of Eastern Sea Esoteric Buddhism, is a genius who has inherited all the magic of the five guardians of Esoteric Buddhism.
Seung-Hee, who has a secret, gets involved in a mysterious case due to her father.

An occult fantasy in which individual exorcists, each driven by their own causes, solve crimes and fight together against evil demons. Demons who rule the spiritual and emotional worlds of mankind, and drive society into chaos.

The demon in human form. An innocent girl sacrificed. Kazumi Ichinose. 16 years old. high school student. Midou Saki fell in love with him when he was an elementary school student. That was the beginning of hell. Jealousy. Obsession. Pools of Blood. Tears. Death. Common sense, words, nothing makes sense. Misfortune befell those loved by "him". Love starts with blood. This is the beginning.

Dohoon can’t find a reason to live. He hoped to get a fresh start at his new high school, but things are no different—the bullies make fun of his limp and no one wants to be his friend. Then one night, he runs into a classmate, Aji… Having seen something he shouldn’t, the two make a deal: Aji will protect him for the time being, but when he turns 20, Dohoon will have to pay up.

Hideo Suzuki is a thirty-five year old mangaka assistant struggling to be the hero in his own life by breaking back into the lime light with a new serial all the while juggling his relationship with his girlfriend and his own delusions. However, as hard as Hideo may try, the world seems to have a different set of plans for him; sinister and dark machinations that completely overturn his reality as he knows it. Nominated for the 3rd and 4th Manga Taisho Award (2010 and 2011).

Story 1: Satsuki have a boy who want to fulfill all of her wish, even from afterlife.

Story 2: About a haunted house.

Story 3: Why a boy who was supposed to die still moving around and the teachers seems to hold a secret?

Beware the red snake! Told from the perspective of a young boy, The Red Snake is a story of the above boy, the house he inhabits, and the forest around his house that stretches on and on. The characters in the story are all mad: his grandfather, who sports a massive growth on his jaw; his grandmother, who believes she is a chicken; his father, who is vicious to the chickens he raises (except for his mother, to whom he provides eggs that so that she can claim she laid them herself); and his sister, whose affection for insects borders on the erotic. The story evolves into a classic nightmare.

The Hino Horror series:
Hino Horror Volume 1: The Red Snake (赤い蛇 Akai Hebi)
Hino Horror Volume 2: The Bug Boy (毒虫小僧 Dokumushi Kozou)
Hino Horror Volume 3: Oninbo and the Bugs from Hell (地獄虫を食う! 鬼んぼ Jigoku Mushi Woku! Oninbo)
Hino Horror Volume 4: Oninbo and the Bugs from Hell 2
Hino Horror Volume 5: The Living Corpse (死肉の男 Shiniku no Otoko)
Hino Horror Volume 6: Black Cat (黒猫の眼が闇に Kuroneko no Me ga Yami ni)
Hino Horror Volume 7: The Collection (M Collection)
Hino Horror Volume 8: The Collection 2
Hino Horror Volume 9: Ghost School (Ghost School (HINO Hideshi))
Hino Horror Volume 10: Death's Reflection
Hino Horror Volume 11: Gallery of Horrors (Kyoufu Gallery)
Hino Horror Volume 12: Mystique Mandala of Hell (Kaiki! Jigoku Mandara)
Hino Horror Volume 13: Zipangu Night
Hino Horror Volume 14: Skin and Bone

Six months ago, Karukozaka High School was sucked into the demon world, and in the ensuing chaos, only two survivors emerged: Nobu, who defeated the Demon Lord that took over the school, and Yumi, who possesses latent demon powers of her own.
Although they're both trying to put the incident behind them, the gateway to the Underworld remains open, and soon Nobu finds himself battling demons right on the streets of Tokyo. The reason for this infestation is simple: a secret organization is trying to establish a Demon Kingdom on Earth by summoning demons through the gateway.
Nobu and Yumi are the only people to have been to the Underworld and survived, so they may have the power to stop the infestation but before that can even happen, they'll have to find each other first.

13-year old Rachel awakens to find herself trapped in the basement of an abandoned building. Without any memories, or even a clue as to where she could be, she wanders the building, lost and dizzy. In her search, she comes across a man covered in badges. He introduces himself as Zack and he wields a grim-reaper like sickle. A strange bond is struck between them, strengthened by strange, crazy promises… These two, trapped in this strange building, don’t know why fate has placed them there. But they will work together desperately to find a way out…

A sophisticated collection of tales, ranging from the macabre to heartwarming to wacky. The trials and tribulations of daily life.
Volume 1: P no Higeki
Volume 2: Senmu no Inu
Volume 3: Akai Hanataba
Volume 4: Unmei no Tori

An anthology of horror one-shots by various artists.

Eyama Aito, a high school student, is the victim of daily bullying. One day a strange letter arrives inviting him to a "captivity game." He may choose one person to hold captive for one month with a chance at winning a large amount of money. He chooses the ringleader of his bullies, Aya Kirishima, and the only rule of the game is to not kill her. Everything else is fair game. Eyama's revenge begins!

From Sync Scans:

If you know the one you loved was known as the “Murder Devil”, would you kill your lover? Or, would you wait to be killed?

Includes:
Toshi Denestsu Yomigaeru Sattujin Oni
From a psychological test, he is diagnosed as having a trait of a murderer, and because of that, she is attacked with a lot of unsolved incidents?!

Migigawa no Akai Yami
Is this a curse from the girl, who was bullied and committed suicide, which causes her right eye to see only the color red?

Satsuki, a boy high school boy and his childhood friend are riding in an underground train until it suddenly stops. Upon closer inspection the denizens of the train discover a mysterious beast! Panic sets in as the passengers struggle to survive the beast and escape to the surface.

Sequel of Dorei Yuugi, with new characters.

Mitozu - a small town lost in the mountains, population 6000. Every evening at 6 heavy bell tolls start resounding down the streets. Everybody knows that after the bell sounded you must not go out until the Sun rises again. But one day this law is broken by an ignorant outsider who just returned home after 10 years in Tokyo and the horrible apparition known only as Myoudo-sama has finally found a victim to prey upon.

From Udon Entertainment:

The Grim Peddler waltzes through fairy tales, giving the stories' inhabitants their hearts' desires. But benefactors beware, for his gifts don't always turn out quite as expected! Classic fables like Sleeping Beauty, Hansel and Gretel, The Frog Prince and more are turned on their side through the unexpected reversals and terrifying twists of this all-new series.

A sequel set after the ending of Gakkou Gurashi! which details the aftermath of the characters.

After a genetic mutation, mosquitoes have become the strongest predator on the planet. Will mankind be able to fight back?