12 books in series

鋼の錬金術師 [Hagane no Renkinjutsushi]

鋼の錬金術師 [Hagane no Renkinjutsushi] is a 12-book series with 12 released primary works first released in 2002 with contributions by Hiromu Arakawa.

Fullmetal Alchemist #2
Fullmetal Alchemist 4: Under the Faraway Sky
Fullmetal Alchemist #5
Fullmetal Alchemist #8
Fullmetal Alchemist #9
Fullmetal Alchemist #10
Fullmetal Alchemist #12
Fullmetal Alchemist #14
Fullmetal Alchemist #19
Fullmetal Alchemist #20
Fullmetal Alchemist #21
Fullmetal Alchemist #23