Black Gate (Japanese: リバース/エンド, Hepburn: Ribāsu/Endo, lit. "Reverse/End"), is a Japanese manga written and illustrated by Yukiko Sumiyoshi. The manga was serialized in Enterbrain's manga magazine Comic B's-Log. The individual chapters were collected into three bound volumes,which were published by Enterbrain between March 1, 2007, and May 1, 2008. It was licensed in English by Tokyopop, which released the manga as an omnibus on October 12, 2010. The manga is also licensed Australasia by Madman Entertainment and in Taiwan by Tong Li Publishing. Source: Wikipedia (en)