Tags: Manga.
Diabolo (ディアボロ) is a manga by Kaoru Ohashi and Kei Kusunoki. The story takes place in Japan. The plot revolves around teenagers 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.