is a set of three illustrated novels written by Tomiyuki Matsumoto in collaboration with Japanese manga group, Clamp

Clamp (manga artists)

, is an all-female Japanese manga artist group that formed in the mid 1980s. Many of the group's manga series are often adapted into anime after release. It consists of their leader , who provides much of the storyline and screenplay for all their works and adaptations of those works respectively ,...

. These novels are based upon role-playing game

Role-playing game

A role-playing game is a game in which players assume the roles of characters in a fictional setting. Players take responsibility for acting out these roles within a narrative, either through literal acting, or through a process of structured decision-making or character development...

 (Clamp Gakuen TRPG) sessions played by Game master Tomiyuki Matsumoto, Takeshi Okazaki and Clamp members. The main characters are based on player characters played in the game sessions. The novels were published by Tokyopop

Tokyopop

Tokyopop, styled TOKYOPOP, and formerly known as Mixx, is a distributor, licensor, and publisher of anime, manga, manhwa, and Western manga-style works. The existing German publishing division produces German translations of licensed Japanese properties and original English-language manga, as well...

 in North America in 2004 and 2005.

The story takes place on Clamp Campus where a series of paranormal events are occurring. Misadventures and solutions occur as five students act as investigators of the supernatural incidents.

Characters

A sixteen year old sophomore student of Clamp Campus' high school division, Class B. He is the master of Koizumi-san, a ghost who was once a maid of his family's household before her death. She is based on the player character that was used by Nanase Ohkawa

Nanase Ohkawa

is a member of the all-female manga-creating team Clamp. She is the director of the team and is primarily responsible for writing the stories and scripts for Clamp's various works....

.

An eighteen year old third year student of Clamp Campus' high school division, Class Z. Despite her innocent appearance and air-headed personality, she is a master swordfighter. She carries around her master blade, Kotetsu, all the time and will cut down any enemy who dares to cross her path. Mifuyu is based on the player character that was used by Satsuki Igarashi

Satsuki Igarashi

is a member of the all-female manga-creating team Clamp. Her duties in the team are Nanase Ohkawa's sounding board, and the character designer of Chobits and line artist for Tsubasa: Reservoir Chronicle....

.

A sophomore student of the high school division in Class A, this lovely blonde lass is actually a boy. With the ability to teleport, Yuki is a psychic who dreams of becoming an extraordinary actress. Yuki is based on the player character used by Takeshi Okazaki.

A second year student the middle school division's Class C, fourteen year old Rion is a member of a proper Shinto family and was born and raised in a shrine. She is the youngest of a long line of revered spiritual mediums and possesses the power to see spirits and read their thoughts. She is based on the player character that was used by Tsubaki Nekoi

Tsubaki Nekoi

is a member of the all-female manga-creating team Clamp. She is the co-director and her duties in the team include applying screentones and correcting manga illustrations. She was also the lead artist on Legal Drug, The One I Love, Wish, Suki and xxxHolic...

.

Eleven year old Koji is a member of elementary school division in sixth grade in Class A. A member of the prestigious Takamura clan of ninjas, Koji is talented in the arts associated with his family. Unfortunately, he doesn't have a height that matches the level of his skills. Koji is also the cousin of Takamura Suoh of Clamp School Detectives

CLAMP School Detectives

is a manga series by Clamp, which was adapted into a 26-episode anime series, produced by Bandai Visual and Pierrot. The manga series was serialized in Kadokawa Shoten's Monthly Asuka manga magazine between January 1992 and October 1993, spanning three tankōbon, while the anime premiered in Japan...

. He is based on the player character that was used by Mokona

Mokona

is the pen name of the lead artist, colorist, and composition designer of the all-female manga-creating team Clamp. She was formerly known as . Clamp has had a huge impact on the "manga explosion" according to an account in the New York Times in 2006. Their artwork has been characterized as "fluid"...

.