Gantz Origins: Oku Hiroya And Sf Movie StoriesGantz no Moto; Gantz no So; Gantz no Moto: Oku Hiroya to SF Eiga Monogatari

Short stories showing some of Oku Hiroya's inspirations before he created his famous masterpiece, Gantz. From Baka-Updates: This series tells us stories about the mangaka's (OKU Hiroya) favorite movies and how it helped and lead to the creation of the manga we all came to know & love - Gantz.