Ghoib Academy

Fantasy

a King in the underworld created an academy that upholds racial equality between astral beings instead of going according to plan, the academy became the most racist place. Amadieu, a spy was sent to find out what caused this academy to go against the plan. how do they fix the situation?

Enter Nightmare

Horror Action

Hikaru is a young adult who has problems at home but when she does a ritual she gets stuck in other peoples nightmares if she dies in a nighmtare she dies in real life. how does she get out.

Purgatory Academy

Fantasy

In a high school filled with young adults who met their fate before they decided whether to go to Heaven or Hell, they find themselves in a timed Purgatory where they figure out where they want to spend eternity and why it matters while they debate the ethical decisions for people on Earth.

Have a Sweet Nightmare

Horror

short horror to help you get a sweet nightmare

Monster Academy Observation Diary

Comedy

A snake-woman?! A flower fairy?! A fox spirit?! Why have you all appeared on my bed? I’m begging you, leave me alone! I just want to be a normal high school student, ahhhhhh!

Revenge with the Demon King

Eastern Romance

She, an infamous fool in the capital, a loser in everyone's eyes, is set up by her vicious elder sister and perishes. When she wakes up, a modern girl's soul is reincarnated in her body. From then, she is no longer the pushover but becomes "the avenger". Her vile-hearted sister and heartless fiancé… must kneel before her and beg for their lives!

Nightmare☆Children

Romance Shoujo

Kakao Cream comes to stay with Velstashio Evil after losing her older sister. His job is to catch nightmare children.

Nightmare Funk

Action Mystery Shounen

Kurusu Hiyori is a young policewoman and the daughter of a former police chief. She has the unusual curse of having predictive dreams of a person's murder the following day. Tragically, the first of these dreams she experienced showed her the death of her own father. Over time, the dreams have led to her social isolation, a kind of grim-reaper reputation, and a lot of problems at work—the police are not fond of her habit of rushing off to investigate future crimes she saw in her dreams. Even worse, the dreams that have left her as an adult bedwetter have not enabled her to save a single person. That all changes, on the day after she dreams of the assassination of Claus Haida, a creepy foreigner. She is overjoyed to have rescued him, but it turns out that he is something of a monster himself. He works for a foreign company, and has decided that it is in both of their interests for the two of them to team up. He is undeniably useful, but can Hiyori really join forces with such a person? (Source: MangaHelpers) Included one-shot: Volume 4: Akumu Imouto! Umaru-chan

Nightmare Express

Adventure Mystery Fantasy

The story begins with a mysterious invitation sent to the most miserable people in the world. With this letter, a girl is invited on a journey aboard a strange, enigmatic train. (Source: ANN)

Princess Nightmare

Fantasy Shoujo Vampire

For her birthday present, she wishes she could be an ordinary girl. She commutes to Rose Academy in Usuyami Town. She is Little, a beautiful 114 year old vampire. Her brother Radou watches her, there's a werewolf servant Inukai, and the magical boy Shinji. The ghost that threatens Little's school life has appeared. (Source: Wasuretai)

Nightmare*Alice

Action Josei

Magician's Academy

Comedy Fantasy Romance

An amazing academy, of the Magicians, by the Magicians, for the Magicians. During the Magician Academy's examination, student Takuto Hasegawa called out Tanarot, a level 5000 mysterious fairy with magic power above 100,000. Tanarot's appearance not only shakes Takuto's cousin Suzuho and the Academy but the godly and the magical worlds! (Source: MU)

Sousoukyoku Nightmare

Comedy Fantasy Shoujo

From Aerandria Scans: The owner of Aries, a strange antique shop, is Baku, a mysterious boy. The costs for the mysterious items there are the guests' nightmares. This is a story of Aries, a shop where only people drown in their dreams can enter...

Daydream★Nightmare

Comedy Fantasy School

Meet Kusumi. He views Ichi as his god. He has no interest in real life girls because anime is his life. Meet Ichi. He has a secret that no one knows about, and he fights to hide it from others. He also has a past that seems to be surfacing through his dreams. But what does it mean when a guy promises to protect him by eating the "bad things"? Join Ichi in his adventure to find out about himself, and what his secret really holds. (Source: Girls' Generation Scanlations)

Nightmare Syndrome

Action Shoujo Ai Yuri

This story is about a girl who's trying to kill a vampire to avenge her father.

Nightmare Catalog

Comedy Historical Yaoi

Ashley is a vampire who's been living an eternal life. In order to ease his loneliness, he starts traveling around the world to find a lover with his attendant doll, Noel… Its beautiful, delicate art adds charm to this sorrowful and serious story. Nevertheless, it somehow brings cynical laughter as well. Enjoy this dark (joke) fantasy! (Source: Bunny's Scanlations)

Imperial Academy

Comedy Romance School

On Christmas eve, a girl dressed in a Santa Claus suit rides a motorcycle so fast that even the gangsters find it hard to keep up... What will happen if the police waiting in ambush catches hold of her mistaking her for a notorious gang leader called SKR?

Candy Pop Nightmare

Action Comedy Magic

The "heroic punk action" manga follows Asuka Yagami as he transfers into an academy where whispered rumors speak of a terrifying, mysterious entity known as the "Unknown." In short order, Makina Himekawa of the school's disciplinary committee confiscates and searches Yagami's bag. Arisu Kokonoe and other students discover that all is not as it seems for Asuka.

Nightmare of Solomon

Mecha

Based on the works of Yoshiyuki Tomino, prequel to Mobile Suit Gundam 0083 that takes place at 0079

Kaibutsu Oujo Nightmare

Action Fantasy Horror

Nightmare☆Night Party!

Fantasy

Strange Traditional Academy

Comedy Martial Arts Romance

Bai Zhi-Wei is a girl born in a rich family. She was enjoying her life until one spring break, her father forced her to go study "Buddism" somewhere. When she refused this idea, she got “kidnapped” by her father’s man and was taken to a beautiful academy with only guys. Weirder still, why were all the guys wearing traditional clothes and who are the two guys that were fighting in the middle of the night? (Source: Sherbet Lemon)

Melty Blood: Rojiura Nightmare

Action Fantasy Super Power

The Nightmare After School

Horror School Shoujo Ai

The protagonist Akira has been plagued with horrible nightmares lately, but what could be their connection to the mysterious murders that are occuring. (Source: MU)

The Nightmare Before Christmas

Fantasy Romance Supernatural

Jack Skellington's got the blues. He's sick and tired of his hometown holiday, Halloween, and is longing for something new. But when his soul-searching leads to his well-intentioned kidnapping of Santa, things start getting pretty creepy indeed!

Nightmare Fortress ~ Majin no Jousai

Action Fantasy Yaoi

Main storyline: There is a kingdom on a island somewhere in the four seas (sry- not too fluent in Japanese), all was well until oneday it was attacked by an army of Demons via. sodomy (fill in your imagination)- and of course the Prince of this kingdom was taken prisoner by the Devil King. With his last strength*cough* the Prince casts a spell that takes this island to another realem/make invisible- so that this "carnage" is maintained. Our main 2 characters are the Princes #1 bodyguard, and the bodyguard's protege- so thus begins their quest to regain the kingdom, kill the demons, and save the Prince. But it won't be that easy, cause watch out the Demons are always ready for a through tumble! (Source: Manga Updates)

Code Geass: Nightmare of Nunnally

Action Mecha School

In 2010, the Holy Britannian Empire invaded the small, far-east country of Japan. Within one month, the nation fell at the hands of Britannia's advanced war machines known as "Knightmares," and the country was renamed to Area 11. After an explosion whisks her brother away to an unknown fate, Nunnally Lamperouge—exiled princess of Britannia—mysteriously finds herself in the midst of a skirmish between Britannians and terrorists. Crippled and blind due to past events, she is saved by Nemo, a strange talking doll who grants her a potent personal Knightmare and clairvoyance, also known as "Geass." Despite the strength of her newfound abilities, Nunnally only wishes for peace. However, the appearance of more Geass users, the spectral vigilante Zero, and other violent forces make the harsh reality of the world all too clear for the fragile princess. [Written by MAL Rewrite]

Goumontou wa Nemuranai: Nightmare Dream

Fantasy Seinen

Clover no Kuni no Alice: Nightmare

Fantasy Romance Shoujo

Manga adaptation of the otome game Clover no Kuni no Alice that focuses on Alice and Nightmare. Also contains a story from Crimson Empire.

Serial Experiments Lain: The Nightmare of Fabrication

Psychological

The Nightmare of Fabrication is a beautifully drawn full-color manga from Yoshitoshi ABe. The 18 page short story can be found in the "an omnipresence in wired 'lain'" artbook. It's a bonus story which apparently isn't related with either the anime nor the PS game. It shows characters who were included in the PS game but not in the TV series (like the psychiatrist), but also determinant characters from the anime who didn't appear in the video game (like Deus). (Source: MU)

Devil May Cry 5: Before the Nightmare

Action Adventure Demons

Several years after the Order of the Sword incident, Kyrie and Nero (who are living together) are approached by the weapon artist, Nico. While initially wary of her rude demeanor, Nero gradually warms up to her. However, some time later a certain demon attacks Nero. At the same time, Dante's informer Morrison introduces him to the mysterious V who has a request for him. V tells Dante that suppressing this demon is Dante's reason for fighting. This prequel novel to Devil May Cry 5 tells the story of how Nero lost his arm and how Dante and V were led to Red Grave City. (Source: Kadokawa, translated)

Devil Summoner: Soul Hackers - Nightmare of the Butterfly

Action Demons Sci-Fi

It follows the story of the original game closely without major deviation, although some events are shortened.

Mobile Suit Gundam: The Principality of Zeon Children's Academy

Mecha Shounen

The manga is set in the seceding space colonies during the year Universal Century 0079—the time frame of the One Year War from the first Gundam space anime series. The story follows five boys who all share a sense of "camaraderie, duty,... jealousy, and war." (Source: ANN)