Blue Exorcist (青の祓魔師（エクソシスト） Ao no Ekusoshisuto, Ao no Exorcist) is a manga written and illustrated by Kazue Kato. The manga has been serialized in Jump Square magazine by Shueisha since April 2009, with individual chapters collected into six tankobon volumes as of April 4, 2011. The one-shot of the manga was first featured in the September 2008 issue of Jump Square and was titled Miyamauguisu House Case (深山鶯邸事件Miyamauguisu-tei Jiken). As of December 17, 2011, 30 chapters have been released in Japan. It was adapted into an anime television series and it will be adapted into an anime film.
Viz Media has licensed the manga for North American production, with the first volume released in April 5, 2011 and the fifth volume scheduled for release in December 6, 2011. The North American book distributor Simon & Schuster listed the first volume of Kazue Kato’s Blue Exorcist manga for release by Viz Media this April 2011.
The story revolves around Rin Okumura, a teenager possessing abnormal strength and endurance who, along with his younger twin brother Yukio, was raised by Father Shiro Fujimoto. Soon after Yukio departs to study at the prestigious True Cross Academy, Rin learns that he is the son of Satan, the strongest of all demons. Witnessing Shiro dying to protect him, Rin ends up doing what his guardian asked him never to do: draw the demon-slaying blade Kurikara, which restrains his demonic powers, from its scabbard. From that moment on, Rin not only gains permanent demonic features like fangs, pointed ears and a tail, but also the power to ignite himself into blue flames that can destroy anything they touch.
At Shiro’s funeral, Rin has an encounter with Mephisto Pheles, who agrees with Rin’s wish to become an Exorcist like his guardian to take revenge on Satan. Rin enrolls at the True Cross Academy, which is actually the Japanese branch of an international organization dedicated to protect the human realm, Assiah, from demons and other creatures from the demon realm, Gehenna. Rin takes part in a special Exorcist course, the existence of which is known only by a few. Much to his surprise, he finds that his brother Yukio is already a veteran Exorcist and will be one of his teachers.
Rin Okumura : The fifteen-year-old protagonist of the story, Rin is the son of Satan born from a human woman and is the inheritor of Satan’s powers. His powers were sealed at birth into the demon-slaying blade Kurikara by Mephisto Pheles the True Cross Academy principle, allowing him to live a normal human life for about 15 years.
Yukio Okumura : Rin’s younger twin brother. When it was discovered that the woman impregnated by Satan was going to have twins, it was believed that Satan’s powers would be split between them.
Mephisto Pheles : Mephisto is the Chairman of True Cross Academy’s Japanese branch. He is portrayed as a man with more money than sense but is very cheap when it comes to spending on others. After Fujimoto’s death, he was ordered to kill Rin but instead accepted Rin’s proposal of becoming an Exorcist and enrolled him into True Cross Academy.
Ryuji Suguro : Ryuji (nicknamed “Bon”) is a stubborn and hot-tempered individual. Despite his delinquent appearance (blonde streak in his naturally black hair, piercings) and attitude, he is very hardworking and the best student in class. Ryuji is the heir to the Cursed Temple in Kyoto. Because of the destruction of the temple in the Blue Night and his anger towards his father Tatsuma Suguro, he swears he will defeat Satan (a goal he claims Rin stole from him) and rebuild his Temple.
Shiemi Moriyama : Shiemi is the daughter of the woman who runs an Exorcist-only shop. She is kind and has an abiding love of gardening, but often lacks confidence in herself. She has blonde, short hair. Before the series, Shiemi never went out of her home and tended to the garden with her grandmother. After her grandmother died, Rin and Yukio exorcised the demon that was leeching her life force and she decided to become an Exorcist.
Izumo Kamiki : Izumo is easily one of the best students and she’s aware of it. She has a tsundere attitude and is offensive towards everyone except her childhood friend Noriko Park, a Korean living in Japan, who was the only one in her elementary school who would talk to her. Izumo has black hair, usually in 2 ponytails and very short eyebrows.
Konekomaru Miwa : Konekomaru is a timid but brilliant individual, able to come up with complex strategies in a short window of time. He is very loyal to Ryuji and Renzou, since they grew up together at the same Temple in Kyoto. He is bald and wears glasses.
Renzo Shima : Renzou is a very carefree yet fearful character. He’s very loyal to Bon and Konekomaru, since both grew up with him at the Cursed Temple in Kyoto. Renzou is the second of the cast who accepts Rin after discovering his identity, finding ignoring Rin to be troublesome. He is infatuated with Izumo, obsessed with women but afraid of bugs.
Shura Kirigakure : Shura is an Upper First Class Exorcist and Rin’s mentor. She trained under the guidance of Fujimoto to obtain the title “Meister” in Knight and can draw a demon sword from a symbol above her chest when she states, “Devour the Eight Princesses, slay the Serpent”. Her sword skills allow her to fight on par with upper level demons like Amaimon.
Shiro Fujimoto : Shiro Fujimoto was a priest at the Southern Cross Monastery, a Paladin in the True Cross Order (the title awarded to the strongest exorcist), Shura Kirigakure’s mentor, and foster father to Rin and Yukio Okumura . He was qualified as an Aria, Dragoon, Knight and Doctor, and had a cat sith familiar, which he called Kuro. Shiro was a man dedicated to his duties and was considered the strongest exorcist. He stole the demon-slaying sword Kurikara, or Koumaken, from the Cursed Temple in Kyoto under orders. Shiro and Mephisto ultimately used the sword to seal the demon heart of the son of Satan and Yuri Egin. Shiro then adopted Yuri Egin’s children, Yukio (who did not inherit Satan’s power) and Rin (full inheritor of Satan’s powers).
Amaimon : One of the Eight Demon Kings, “King of the Earth” and another son of Satan. Amaimon has vast control over the land, e.g. being able to create earthquakes. He is eccentric and hates being laughed at or ignored. Unlike his father and elder brother Mephisto Pheles, Amaimon initially had little interest in Rin, instead wishing to tour Japan upon arrival, but quickly became obsessed with his younger half-brother after fighting him. Amaimon mentioned he has a cousin who has an interest in the occult and even goes on to say that she would be happy if he brought her a human eye. His name is derived from the demon Amaymon.
Igor Neuhaus : An Upper First Class Exorcist as well as lecturer in the Academy, who obtained the titles of Tamer, Doctor and Aria. He wears an eyepatch over his left eye, and has Aria incantations and magic circles tattooed on both arms. He had a run-in with Satan when he was younger, which robbed him of his family and the sight in his left eye, which is why he holds immense hatred for Satan and demons that are related to Satan.
Asa Ogyusuto Enjeru : The newly appointed Paladin. He was ordered by the Grigori to interrogate Mephisto and captured Rin as evidence. Arthur is a respected exorcist with dubious ethics, as said by Shura to be like a saint on the outside but really a devil inside. He uses the sentient demon sword Caliburn. When speaking, Caliburn shows extreme affection towards him and talks like a love-struck teenage girl. His name is a reference to King Arthur and his sword Excalibur.
This information based on http://en.wikipedia.org/wiki/Blue_Exorcist