(C57) [Tsurupeta Kenkyuusho (Hoshino Fuuta, Okaya Hitsuji)] Hoshino Fuuta no Oekaki Book (Various)
Tsurupeta Kenkyuusho Triangle horse race
[Tsurupeta Kenkyuusho (Various)] Tsurupeta Kenkyuu Houkokusho 005 "Dengeki Jigoku" - Turupeta Research Report
(C77) [Tsurupeta (Various)] Tsurupeta Kenkyuu Houkokusho "Shin Hissatsu Waza no Kyoufu " - Turupeta Research Report
Tsurupeta Kenkyuu Houkokusho 011
(C86) [Tsurupeta Kenkyuusho (Various)] Tsurupeta Kenkyuu Houkokusho 009
Tsurupeta Kenkyuu Tokubetsu Houkokusho ~Artbook of Hirohiroki
(C73) [Tsurupeta Kenkyuusho (Various)] Tsurupeta Kenkyuu Houkokusho "Tsurupeta Kyoudan no Yabou " - Turupeta Recearch Report
(C75) [Tsurupeta Kenkyuusho (Various)] Tsurupeta Kenkyuu Houkokusho "Kessen Zenya" - Turupeta Research Report
(C74) [Tsurupeta (Various)] Tsurupeta Kenkyuu Houkokusho "Kakyuu Sentou In no Isshou" - Turupeta Research Report
