Innocence1 - Theory
K's Theory
A Kid’s Theory
[Theory of HEAVEN (CROW)] Ikuiku! Ikuma-kun! (Black Jack) [2017-08-20]
(Knights Theory) [Snow Peach (Mipoko)] Naru no Anal kara Inspiration ga Waite Kuru zo (Ensemble Stars!)
[Fuzzy Guard (Shiido)] Suki desu Jougasaki-san (THE IDOLM@STER CINDERELLA GIRLS) [Digital]
Crow (Theory of Heaven) - Honey Kami the 2nd vol.0.7
[Mira] Kodomo no Riron | A Kid’s Theory (School Girls Love Selection) [English] {Hennojin}
Kimi to no Shukumeiron - The theory of fate with you. | 與妳的宿命論
Orcs and juvenile ω love evolution theory