Hiroya Oku has written at least 108 books. Their most popular book is Gantz/1 with 28 saves with an average rating of 3.4⭐.
They are best known for writing in the genres Science fiction, Comics, and Adventure.
Adventurous, dark, and sad are their most common moods.
 Gantz/1
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 Inuyashiki, Vol. 1
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 Gantz Omnibus Volume 1
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 Gantz/3 Gantz/3
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 Gantz/2 Gantz/2
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 Inuyashiki, Vol. 2
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 Gantz/5 Gantz/5
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Gantz/7 Gantz/7
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 Gantz/6 Gantz/6
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 Gantz/4 Gantz/4
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Gantz/8 Gantz/8
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 Gantz/22 Gantz/22
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Gantz/14 Gantz/14
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 Gantz/30
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 Gantz/32
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 Gantz/33
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 Gantz/35
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 Gantz/23 Gantz/23
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 Gantz/13 Gantz/13
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Gantz/12 Gantz/12
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 Inuyashiki, Vol. 3
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Gantz/24 Gantz/24
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Gantz/25 Gantz/25
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 Gantz /10
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 Gantz/27
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 Gantz/29
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 Gantz/28
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 Gantz/31
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 Inuyashiki, Vol. 5
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 Inuyashiki, Vol. 4
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 Gantz /21
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 Gantz /16
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 GIGANT, Vol. 5
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 Gantz /19
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Gantz Omnibus Volume 7 Gantz Omnibus Volume 7
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 Gigant, Vol. 8
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 Gantz/26
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 Gantz/37
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 Gantz Volume 18 Gantz Volume 18
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 Gantz/34
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Gantz Omnibus Volume 6 Gantz Omnibus Volume 6
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 Gantz/36
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 Gantz /11
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 Gantz /9
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 Gantz /15
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 Gantz /20
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 Gantz /17
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 Gantz Omnibus Volume 10
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Gantz Omnibus Volume 5 Gantz Omnibus Volume 5
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Gantz/9 Gantz/9
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Gantz/10 Gantz/10
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GIGANT 1 GIGANT 1
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 GIGANT 10
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 GIGANT
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 GIGANT 7
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 Gigant 6
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 Gigant 4
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 GIGANT #3
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 Inuyashiki, Vol. 9
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 Inuyashiki, Vol. 7
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 Inuyashiki, Vol. 6
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Gantz Omnibus Volume 12 Gantz Omnibus Volume 12
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 GIGANT, Vol. 1
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 Gantz Omnibus Volume 9
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 Gantz Omnibus Volume 11
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 Gantz Omnibus Volume 8
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Gantz/15 Gantz/15
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Gantz/20 Gantz/20
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Gantz/16 Gantz/16
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Gantz/17 Gantz/17
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 Inuyashiki, Vol. 10
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 Inuyashiki, Vol. 8
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 Gigant, tomo 1
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Gigant, tomo 2 Gigant, tomo 2
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 Last Hero Inuyashiki, Vol. 1
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 Gantz/18
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Gantz/11 Gantz/11
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Gantz/19 Gantz/19
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 Gantz Omnibus Volume 2
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Gantz, Volume 34 Gantz, Volume 34
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Gantz/21 Gantz/21
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 Gantz /1
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 Last Hero Inuyashiki, Vol. 2
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 Last Hero Inuyashiki, Vol. 3
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 Last Hero Inuyashiki, Vol. 4
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 Last Hero Inuyashiki, Vol. 5
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 Last Hero Inuyashiki, Vol. 6
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 Last Hero Inuyashiki, Vol. 7
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 Last Hero Inuyashiki, Vol. 8
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 Last Hero Inuyashiki, Vol. 9
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 Last Hero Inuyashiki, Vol. 10
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 GIGANT 2
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 Inuyashiki 10
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 Inuyashiki 8
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 Inuyashiki 9
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 Inuyashiki 7
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 いぬやしき 6
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Gigant T06 Gigant T06
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 Inuyashiki
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Gantz Omnibus Volume 4 Gantz Omnibus Volume 4
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