Enigma Boy (エニグマの少年 Eniguma no Shōnen) is the twenty-fourth story arc in Diamond is Unbreakable.
Josuke and Yuya work together to find the enemy Stand user, revealed as Terunosuke Miyamoto, new user of the Stand Enigma. Enigma traps people into paper once they've shown their terror's tell and manages to trap Josuke. However Yuya frees Josuke and Josuke defeats Terunosuke by fusing him with a book, freeing Koichi and his mother Tomoko.
|Josuke Higashikata||Koichi Hirose||Yuya Fungami||Akemi, Yoshie and Reika||Terunosuke Miyamoto|
|Crazy Diamond||Highway Star||Enigma|| Echoes
- 139 (404). Enigma Boy, Part 1
- 140 (405). Enigma Boy, Part 2
- 141 (406). Enigma Boy, Part 3
- 142 (407). Enigma Boy, Part 4
- 143 (408). Enigma Boy, Part 5
- 144 (409). Enigma Boy, Part 6
- 31 (105). July 15 (Thursday), Part 1
- 32 (106). July 15 (Thursday), Part 2
- 33 (107). July 15 (Thursday), Part 3