Diabolo (manga)
Diabolo is a Japanese manga series by Kaoru Ohashi and her sister Kei Kusunoki. It was serialized by Shueisha from 2001 to 2003.
Plot
Diabolo revolves around teenagers in Japan being converted to followers of the "Diabolo" by a secret society, in exchange for the fulfillment of their wishes. Teens who have made a pact with the Devil begin to go crazy at age 17, often manifesting in acts of brutality and homicide, and upon turning 18 reach a point of no return to their original selves. The phenomenon is a mystery to the adult world and media, who try to ascertain the origin of mass teen violence. There are six great spirits that serve the Devil, each of which has a hand in destroying the world. The main characters, Ren and Rai, use their own Devil-given powers to stop them while searching for their cousin Mio, saving other teenagers from their pacts, and racing against their approaching 18th birthdays. It describes its plot as "The age where the ensured bend to temptation and slowly fall from human to devil."Characters
Main characters
;Rai;Ren
Side characters
;Mio;Hiromi
Six Great Spirits
All six of the Great Spirits' names are taken directly from the hierarchy of hell as listed in The Grand Grimoire. They are teenagers who have adopted the names of the Great Spirits following their pacts with Diabolo and the acquisition of their powers. They are the primary antagonists for Ren and Rai.;Agliarept
;Satanachia
;Fleurety
;Sargatanas
;Nebiros
;Lucifuge Rofocale