Tokyo Majin

Tokyo Majin, known in Japan as , is a Japanese anime series, which premiered in Japan on the anime satellite TV network Animax. A large part of Tokyo Majin Gakuen, it is loosely based on a series of Japan-only video games, and is directed by Shinji Ishihara.
On June 26, 2007, ADV announced that they had acquired the license to this series (for $780,000). ADV distributed the series under the title of "Tokyo Majin", dropping "Gakuen: Kenpuchō Tō" from the title. In 2008, the anime became one of over 30 ADV titles whose licenses were transferred to Funimation.
American television network Chiller began airing the series as part of their "Anime Wednesdays" block on July 15, 2015.
Plot.
The nights of Tokyo are disturbed by mysterious deaths involving the 'Reborn Dead', people who disappear at night and suddenly reappear during the day as a corpse. Also, as corpses are sent to the morgue to be autopsied, they disappear again leaving signs showing that they escaped themselves.
To fight these 'Reborn Dead' and to prevent more deaths, mysterious transfer student, Tatsuma Hiyuu, and delinquent student, Kyouichi Houraiji, stay up every night to fight the demons and discover the cause. They are joined by rest of the final year students at the Magami Academy who all have supernatural powers. They must fight not only the demons, but the powerful beings controlling them who are bent on destroying the city and the people within it.
Anime.
Season 1.
The first season, Tokyo Majin Gakuen Kenpuchō: Tō (東京魔人學園剣風帖 龖?, lit., "Tokyo Demon Academy Sword Wind Book: Flight of the Dragon") originally aired on January 19, 2007, and ended on April 20, 2007. All of the episodes in the season are called the 'Dark Arts Chapters' (外法編 Gehou-hen).
In the nights of Tokyo, mysterious deaths involving the 'Reborn Dead' occur. The mysterious transfer student, Tatsuma Hiyuu, and delinquent student, Kyouichi Houraiji, fight the demons and attempt to discover the cause. Along with the other students at the Magami Academy in Shinjuku who all have supernatural powers, they fight the vengeful Tendo Kozunu who has unleashed a long-dead evil, bringing disorder to the Dragon Stream and threatening destruction of the city.
Season 2.
A second season, titled Tokyo Majin Gakuen Kenpuchō: Tō Dai Ni Maku (東京魔人學園剣風帖 龖 第弐幕?, lit., "Tokyo Demon Academy Sword Wind Book: Flight of the Dragon Second Act") originally aired on July 27, 2007, to October 12, 2007. Its first five episodes are called the 'Martial Fist Chapters' (拳武編 Kenbu-hen), its next five episodes are called the 'Stars of Fate Chapters' (宿星編 Shukusei-hen), and the last two episodes are called 'Extra Chapters' (番外編 Bangai-hen). The 'Extra' episodes do not run in the chronological timeline of the story, but are flashbacks and fillers.
The students at the Magami Academy look forward to their graduation, but the underground assassin group known as the Twelve Heavenly Generals of the Martial Fist begin to move against those protecting the city from demons. The students discover that the Martial Fist have been duped by the evil Yagyuu Munetaka who has manipulated them. Together with the Martial Fist, the Magami students led by Tatsuma Hiyuu, risk their lives to defeat Yagyuu who is more powerful than Tendo Kozunu whom he had used as his pawn.