Hiroya Oku has written at least 102 books. Their most popular book is Gantz/1 with 21 saves with an average rating of 3.5⭐.
Adventurous, dark, and sad are their most common moods.
Series
22 primary books23 released booksGantz is a 23-book series with 22 primary works first released in 2000 with contributions by Hiroya Oku, Marc Bernabé, and 2 others.
Series
1 released bookGantz Novels is a 1-book series first released in 2010 with contributions by Masatoshi Kusakabe, Yusuke Kozaki, and Hiroya Oku.
Series
10 primary booksGigant is a 10-book series with 10 primary works first released in 2018 with contributions by Hiroya Oku and 奥浩哉.
Series
10 primary books犬屋敷 [Inuyashiki] is a 10-book series with 10 primary works first released in 2014 with contributions by Hiroya Oku.