Black Gate (Japanese: / Hepburn: Ribasu/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 volumeswhich 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. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Written Work