The Norse god of mischief Loki has been banished to the human world in the body of a young boy. In order to redeem himself, he sets up a detective agency and dispels the evil residing in people's hearts. He is joined by Mayura, a spiritually clueless high school girl with a passion for mysteries, and eventually, other Norse gods begin appearing around Loki for unknown reasons.

From Project Bite Me! Scanlations:

The creator of Baoh and Jojo's Bizarre Adventure presents a manga about magic and mysteries! You'll meet him at 13:13 pm, on Friday the 13th. He'll do an uncanny intro where he plays a trick on you! And wherever he goes, trouble seems to always follow. Who is this person who creates such incidents? None other than Cool Shock BT!

From Tokyopop: Nanaki survives a car accident to discover he is psychic. Recruited into an organization that solves cases with psychic powers, Nanaki's average life quickly turns into one of adventure and intrigue. Slacker Nanaki Shunsuke's life is turned upside down when he's hit by a bank robber's car and later meets a strange boy who claims that the accident caused Nanaki to develop psychic powers and that he is required to join LOCK, a paranormal investigations agency or be the suspect of any and every suspicious case that turns up. (thought a summary and categories were need since there weren't any :P If your into Shonen it's a good read :P Sirenic Griffin){Corrections by Silvermagic}

A mysterious command arrives from a "King".
The life-threatening "Game" has now begun for the 32 students of the first year's B Class.
One day, all of the students in Nobuaki's class received their first message from someone calling themselves the "King", in which was written a baffling command.
That first command was very easy. However, the commands began to escalate until a life-threatening game had begun.
Failing to obey the orders leads to death!! Their friendships are being undermined by a bottomless terror!!

From Tokyopop:
A smoke-filled alley in Chinatown harbors Count D's Pet Shop. The pets sold here aren't your everyday variety and the Count prides himself on selling Love and Dreams in the form of magical creatures that come with an exclusive contract. But buyers beware. If the contract is broken the Count cannot be held accountable for whatever may happen. A fascinating and macabre look into the very soul of human nature.

Tsutsumu Shisui is brought up by his grandfather, Dr. Yuujirou after his father, Dr. Hiromu died. But now Yuujirou also died with a lot of debt. At Yuujirou's funeral, Tsutsumu's cousin, Sou Takigawa suddenly appears and declares that he wants to take care of Tsutsumu.

Two years ago, the famous detective Narumi Kiyotaka disappeared, leaving behind only the words, "I am pursuing the mystery of the Blade Children." Now, his younger brother Ayumu is accused of murdering a fellow student, and begins to discover people with connections to the Blade Children all around him. The Blade Children were born cursed, and Ayumu may be the only key to saving them, but first they want to test him, by trying to kill him with everything they've got. All the while, it seems that Kiyotaka is manipulating events for his own unknown purposes. - From AnimeNewsNetwork Ongoing

Meet Pamela, a tarot card reader who helps supernatural beings living in the human world. She'll help anyone, whether they're a love-stricken cat, a vampire spending eternal life running from his one true love, an unattractive waitress looking for the man of her dreams, or even a magician who creates a humanoid doll to serve the woman he loves. Although Pamela is good-natured, there is a deep dark secret that she must deal with before she can move on to the next life.

Tori Ichihashi, a 10th grade student, has a strong sense of justice, and hates bad guys. Every night, burglars hover around the school that Tori attends. Tori can't let it go unchallenged.

Included are the following stories:

- "First Step"
- "The Wish Under Blooming Sakura Trees"

From Tokyopop:
Lili is just like any other girl except she can foretell the future! This 'Zodiac PI' relies on horoscopes and astrology to help her solve crimes and track down criminals. When there's trouble a'brewing, she transforms herself into the magic Detective Spica and looks to the stars to guide her way. Before long, she is joined by her childhood friend, Hiromi, who dreams of becoming a detective as skilled as Lili. Soon, no astral investigation is too arduous for this dynamic duo!

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 old 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!

From AQUA Scans:

At the outskirts of town in a mansion, which is rumoured to house devils, live the masters of the household: the young miss (master?) Lily and the strange young master (a NEET) It. We follow them as they carry out strange requests, ones which normal humans cannot settle themselves.

Yet again, today, a young girl that wishes to find her black cat has paid a visit…

From Iskultrip:
Kaho is being bullied by another girl. One day, while walking to somewhere, she is approached by a man with a goat's head...?

Doujima Kenji and his friends decide to spend their winter vacation ghost hunting, however all but one of them cancel. Now, he finds himself alone with the girl he likes, and it turns out that there may be more to this ghost story than they had anticipated.

It's a story about a girl who lost her every memory. One stormy night, a sudden meeting changes her life forever. She starts anew while still trying to set the pieces of the puzzle that was once her life. Soon after, a love that puts everything on the line is born in the girl's heart.

By chance, she starts living with a boyband called RISKY and her adventure of love and discovery begins...

From Aerandria Scans:
“Cause trouble in Shibuya, and I’ll hear everything.”
Chiryu Mamoru is the former Shibuya Gang King (Crime Boss). Now he’s protecting the streets of Shibuya as the youngest lawyer in history. With an ear piercing as his lawyer badge and law as his weapon, he works to destroy the nest of evil and to protect the people. Introducing one lawyer’s all consuming fight against heresy!
“You can’t protect anything with violence… that’s why I choose the law!”

Basically, the teenage detective kiddo was frozen by some EVIL MASTERMIND PROFESSOR back in near-mid-1900’s, and gets unfrozen in the 2000’s by his granddaughter. Hilarity ensues as he encounters weird new stuff and does silly blunders in his daily life with his granddaughter, Hikari.

She calls herself Sexy Voice. To most of the world, she's just Hayashi Niko, an ordinary schoolgirl - but when time permits, she lives a double life as a hired investigator/spy. To help her, she has recruited the rather unlikely assistant she calls Robo, a geeky lump of a man who doesn't really know why he feels the need to do everything she tells him to. He just does it. Together, the odd team solve a number of cases for Sexy Voice's employer, an aging gangster.

From Storm in Heaven:

Tome dreams of becoming a famous fashion designer. She's on the right track, working for some big-shots, and then Tamara gets dumped on her. While Tamara may be a famous beauty on the run-way, in her normal, daily life, the supermodel is self-centered, obnoxious, bossy, and an utter leech. However, when the bearer of a "cursed" necklace dies at a fashion show, is Tamara the only help Tome will get to solve the mystery?

1) Noda, a boy who has 3 secrets: First, he's in love with his classmate Fukushima. Second, he can draw his spirit out from his body. And finally, sometimes he secretly watches Fukushima at home, when his spirit has left his body. But one day he drops in at Fukushima's at a very unfavorable moment.

2) A boy who is asked to take care of a huge white rabbit and how the animal makes him understand his own feelings.

3) Yuzuru Sakaguchi, a boy who leads a lonely but peaceful life, cut off by the rumor that people can see ghosts around him. One day a new teacher comes to his school and his life is thrown completely out of joint.