19 books in series

Naoki Urasawa's Monster

Naoki Urasawa's Monster is a 19-book series with 19 primary works first released in 1994 with contributions by Naoki Urasawa, Takashi Nagasaki, Werner Weber, and Emil Scherbe.

Monster. Deluxe, Vol. 1
Monster Kazenban, Volume 1
Monster, Vol. 1
Monster: The Perfect Edition, Vol. 1
Monster
Naoki Urasawa's Monster, Volume 4
Monster: Perfect Edition, Vol. 7
Monster: Perfect Edition, Vol. 9