Akuma no Puzzle
悪魔のパズル · あくま の ぱずる
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Collection of one shots: 1) Akuma no Puzzle 2) Kare to Kanojo to + 1 (Him and Her, Plus One) 3) Karigami no Himegimi (Karigami Princess) 4) Shichigatsu no Hanayome (July Bride)
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections