Tsurupeta Kenkyuu Tokubetsu Houkokusho ~Artbook of Hirohiroki
[Raijinkai (Haruki Genia)] Jintoku No Kenkyuu 3
(C56) [Raijinkai (Haruki GeNia)] Jintoku No Kenkyuu 8
(C57) [Raijinkai (Haruki Genia)] Jintoku No Kenkyuu 9
[Raijinkai (Haruki GeNia)] Jintoku No Kenkyuu 4 [English] [EHCOVE]
Jintoku No Kenkyuu 6
(C54) [Raijinkai (Haruki GeNia)] Jintoku No Kenkyuu 6
(C56) [Raijinkai (Haruki GeNia)] Jintoku No Kenkyuu 8 [English]
(C52) [Raijinkai (Haruki Genia)] Jintoku No Kenkyuu 5
[Raijinkai (Haruki Genia)] Jintoku No Kenkyuu 11