[Kotobuki Kazuki] Tenkai Kouro 2
(CR33) [Kotobuki Chop, PIGGSTAR (Kaeru Jiro, Nagoya Shachihachi, Kotobuki Kazuki)] Ichigo Hankachou (Kari) (Ichigo 100%)
[Kotobuki Kazuki] Hounyuu no Ryoujokuteki na Nichijou [Chinese]
[Kotobuki Kazuki] Sis Ero [English] {Tadanohito} [Decensored]
[Kotobuki Kazuki] Torawareta Chijyuku
(C81) [D-heaven (Amanogami Dai)] Boku wa Sefure shika Inai (Boku wa Tomodachi ga Sukunai)
[Kotobuki Kazuki] Tenkai Kouro 4 | Heaven's Road 4
Hell and Heaven July 2019
(C87) [AMORPHOUS innocent fiction (Sakazuki Homare)] Zettai Iinari!? Kuchibirubiyaku 4
[Kotobukiya (kotobuki)] Makarasan to issho! (Tokyo Afterschool Summoners) [Digital]