Mystery

Genre: Mystery, Drama, Horror, Police, Psychological, Thriller, Seinen
Episodes: 74
Type: TV Series
Age Rating:   Teen +17  

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English: Monster
Synonyms: Монстр, 怪物

Genre: Comedy, Mystery, Drama, Horror, Supernatural
Episodes: 25
Type: TV Series
Age Rating:   Teen +13  

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English: Ghost Hunt

Ghost Hunt Episodes Online

Taniyama Mai is your everyday high school student, who has the pastime of telling ghost stories with her friends. Much to her surprise, she meets a mysterious ghost hunter, Shibuya Kazuya, the 17 year old head of Shibuya Psychic Research, sent out to investigate strange phenomenon occurring in Mai's school. Accidentally interfering with their investigations, Mai unintentionally causes the injury of Shibuya's assistant, resulting in Shibuya demanding Mai herself to aid him in his investigations. Based on the novel by Fuyumi Ono and Shiho Inada

Genre: Mystery, Horror, Kids, Supernatural
Episodes: 23
Type: TV Series
Age Rating:   Everyone  

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Synonyms: Thriller Restaurant

Kaidan Restaurant Episodes Online

TV Asahi announced a new kids anime "Kaidan Restaurant (Thriller Restaurant)" based on a picture book. Each episode will consist of three stories or ''dishes'': the appetizer, the main dish, and dessert. The first two ''dishes'' will deal with an ordinary sixth-grade schoolgirl named Ako Ozara and the bizarre occurrences that befall her classmates. The third ''dish'' will be a standalone short ghost story told by Ako and her friends.

Genre: Mystery, Drama
Episodes: 22
Type: TV Series
Age Rating:   Teen +17  

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English: Red Garden
Synonyms: RG, RED GARDEN

Red Garden Episodes Online

Strange suicides have been taking place in New York. One day, four girls from the same high school wake up in the morning feeling tired and dizzy and not being able to remember anything about the previous night. In school, they find out that one of their classmates has committed suicide. School is canceled for the rest of the day, but instead of going home, the girls are drawn to a park by butterflies only they can see. Suddenly a man and a woman approach the girls, telling them that they all died the previous night.

Genre: Adventure, Comedy, Demons, Mystery, Drama, Fantasy, Historical, Magic, Romance, Shoujo
Episodes: 44
Manga: Read Kamikaze Kaitou Jeanne Manga Online
Type: TV Series
Age Rating:   Everyone  

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English: Phantom Thief Jeanne
Synonyms: Divine Wind Thief Jeanne

Kamikaze Kaitou Jeanne Episodes Online

A normal looking high school girl on the outside, Kusakabe Maron is actually the reincarnation of Jeanne d' Arc. With the help of the angel, Fin Fish, Maron works as the thief Jeanne at night to seal the demons that reside in pieces of artwork, preying upon the weak hearts of the owners. She is branded as a thief due to the fact that the artworks disappear after she seals the demons. One day, a new neighbor and classmate appears, as well as a rival in her night job, the thief Sinbad. With her own best friend being the detective's daughter, out to capture her and the appearance of her new rival, Maron's work is anything but easy. Based on the manga by Tanemura Arina.

Genre: Adventure, Comedy, Mystery, Shounen, Police
Episodes: Ongoing
Manga: Read Detective Conan Manga Online
Type: TV Series
Age Rating:   Teen +13  

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English: Case Closed
Synonyms: Meitantei Conan

Detective Conan Episodes Online

Kudo Shinichi is a seventeen year-old high school detective whom people call the "Modern Sherlock Holmes." However, one night after a date with his childhood sweetheart, Ran, Shinichi witnessed an illegal trade and, caught off his guard, was knocked unconscious and fed a drug that was supposed to kill him... but he woke up and found himself shrunken to a seven year-old. In order to track down the men who did this to him, Shinichi hid his identity and lived with Ran, whose father happened to be a hopeless detective, and with that came a series of murders and mysteries that he must solve. (Source: ANN)

Genre: Mystery, Romance, Supernatural
Episodes: 13+2
Type: TV Series
Age Rating:   Teen +17  

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English: Ghostory
Synonyms: Monstory

Bakemonogatari Episodes Online

The story centers on Koyomi Araragi, a third year high school student who has recently survived a vampire attack, and finds himself mixed up with all kinds of apparitions: gods, ghosts, myths, and spirits.
(Source: Wikipedia)

Genre: Action, Mystery, Drama, Sci-Fi
Episodes: 25
Sequel: Darker than Black: Ryuusei no Gemini
Manga: Read Darker than Black Manga Online
Type: TV Series
Age Rating:   Teen +17  

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English: Darker than BLACK
Synonyms: Darker than BLACK - Kuro no Keiyakusha

Darker Than Black Episodes Online

In Tokyo, an impenetrable field known as "Hell's Gate" appeared ten years ago. At the same time, psychics who wield paranormal powers at the cost of their conscience also emerged. Hei is one of the most powerful of these psychic agents, and along with his blind associate, Yin, works for one of the many rival agencies vying to unlock the mysteries of Hell's Gate.

Genre: Mystery, Horror, Supernatural, Psychological
Episodes: 26
Type: TV Series
Age Rating:   Teen +17  

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English: When the Seagulls Cry
Synonyms: When They Cry 3, When the Seagulls Cry, When They Cry - Seagulls

Umineko no Naku Koro ni Episodes Online

Umineko no Naku Koro ni takes place in 1986 during the time frame of October the 4th and the 5th on a secluded island named Rokkenjima (六軒島). The head of the wealthy Ushiromiya family, Kinzō Ushiromiya, who lives on and owns Rokkenjima, is near death, and eleven of his family members arrive on the island to discuss how Kinzō's assets will be divided once he is dead. Also on the island are five of Kinzō's servants, and his personal physician. After the eleven family members arrive, a typhoon traps them on the island and shortly after people start to get mysteriously murdered. (Source: Baka-Tsuki)

Genre: Action, Comedy, Mystery, Drama, Shounen, Super Power, Supernatural
Episodes: 49
Manga: Read Getbackers Manga Online
Type: TV Series
Age Rating:   Teen +13  

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English: Getbackers
Synonyms: Get Backers, GetBackers: Dakkan`ya

Getbackers Episodes Online

Mido Ban and Amano Ginji are known as the Get Backers, retrievers with a success rate of 100 Whatever is lost or stolen, they can definitely get it back. Despite their powerful abilities and enthusiastic behavior, Ban and Ginji are terminally broke no matter what they do simply because little people would actually desire to hire them. As a result, the pair of them tend to do dangerous jobs, often leading to unwanted re-encounters with their old (and dangerous) friends. Based on the manga by Yuya Aoki and Rando Ayamine.