Death Note

Genre(s): Action, Drama, Fantasy, Horror, Mystery, Psychological, Shounen, Supernatural, Tragedy
Author(s): OHBA Tsugumi
Status: Completed
Anime: Death Note
Summary:
A shinigami, as a god of death, can kill any person—provided they see their victim's face and write their victim's name in a notebook called a Death Note. One day, Ryuk, bored by the shinigami lifestyle and interested in seeing how a human would use a Death Note, drops one into the human realm.

High school student and prodigy Light Yagami stumbles upon the Death Note and—since he deplores the state of the world—tests the deadly notebook by writing a criminal's name in it. When the criminal dies immediately following his experiment with the Death Note, Light is greatly surprised and quickly recognizes how devastating the power that has fallen into his hands could be.

With this divine capability, Light decides to extinguish all criminals in order to build a new world where crime does not exist and people worship him as a god. Police, however, quickly discover that a serial killer is targeting criminals and, consequently, try to apprehend the culprit. To do this, the Japanese investigators count on the assistance of the best detective in the world: a young and eccentric man known only by the name of L. (Source: MAL Rewrite in MyAnimeList)

Ghost Hunt

Genre(s): Comedy, Drama, Horror, Mystery, Psychological, Shoujo, Supernatural
Author(s): Ono Fuyumi, Inada Shiho
Artist(s): Inada Shiho
Status: Completed
Anime: Ghost Hunt
Summary:
The decrepit building was condemned long ago, but every time the owners try to tear it down, "accidents" start to happen-people get hurt, sometimes even killed. Mai Taniyama and her classmates have heard the rumors that the creepy old high school is haunted-possibly by ghosts from the Second World War. So one rainy day they gather at the told school to tell ghost stories, hoping to attract one of the suspected spirits.

No ghosts materialize, but Mai and her friends do meet Kazuya Shibuya, the handsome young owner of Shibuya Psychic Research, who's been hired to investigate paranormal activity at the school. Also at the scene are an exorcist, a Buddhist monk, a woman who can speak with the dead, and an outspoken Shinto priestess. Surely one of them will have the talents to solve this mystery! (Source: Del Rey Manga)

Tokyo Ghoul:re

Genre(s): Action, Drama, Fantasy, Horror, Mature, Mystery, Psychological, Seinen, Supernatural
Author(s): Ishida Sui
Artist(s): Ishida Sui
Status: Completed
Anime: Tokyo Ghoul:re
Summary:
Two years have passed since the CCG's raid on Anteiku. Although the atmosphere in Tokyo has changed drastically due to the increased influence of the CCG, ghouls continue to pose a problem as they have begun taking caution, especially the terrorist organization Aogiri Tree, who acknowledge the CCG's growing threat to their existence.

The creation of a special team, known as the Quinx Squad, may provide the CCG with the push they need to exterminate Tokyo's unwanted residents. As humans who have undergone surgery in order to make use of the special abilities of ghouls, they participate in operations to eradicate the dangerous creatures. The leader of this group, Haise Sasaki, is a half-ghoul, half-human who has been trained by famed special class investigator, Kishou Arima. However, there's more to this young man than meets the eye, as unknown memories claw at his mind, slowly reminding him of the person he used to be. (Source: MAL Rewrite in MyAnimeList)

Tokyo Ghoul

Alternative Name: Tokyo Kushu
Genre(s): Action, Drama, Fantasy, Horror, Mystery, Psychological, Seinen, Supernatural, Tragedy
Author(s): Ishida Sui
Artist(s): Ishida Sui
Status: Completed
Anime: Tokyo Ghoul
Summary:
Strange murders are happening in Tokyo. Due to liquid evidence at the scene, the police conclude the attacks are the results of 'eater' type ghouls. College buddies Kaneki and Hide come up with the idea that ghouls are imitating humans so that's why they haven't ever seen one. Little did they know that their theory may very well become reality. (Source: Baka-Updates Manga)

Risou no Kareshitachi

Alternative Name: Perfect Boyfriends
Genre(s): Drama, Horror, One Shot, Shoujo
Author(s): Honda Honomi
Artist(s): Honda Honomi
Status: Completed
Summary:
Naho wants to be Hayato's girlfriend, but senpai won't quit noticing her. (Source: MU)