[Kouka Ryouhei (Yanagi Kyouhei)] PrelfIllust No.4.5 NovelizeComic
[Waribashi Kouka] Shitsui no Mibojin wa Gifu no Juyoku ni Oboreru
(Panzer Vor! 15) [Mushimusume Aikoukai (Nakamura Yukitoshi)] OnaSupo Panzer Erika Hen (Girls und Panzer)
[Kouka Ryouhei] El-tentacle Birth Lady's Mk.A PHASE-3 2of2
[Kouka Ryouhei (Yanagi Kyouei)] El-tentacle Birth Lady’s Mk.B ex.other [Digital]
[Kouka Ryouhei (Yanagi Kyouei)] El-tentacle Birth Lady’s Mk.B PHASE-3 "Kou" [Digital]
(C94) [Hakukoukai (Shiramizu Mizuchi)] Shirayuki wa Hiretsu ni Yugamu (SINoALICE)
[Kouka Ryouhei (Yanagi Kyouei)] El-tentacle Birth Lady’s Mk.B PHASE-3 "Zen" [Digital]
(Panzer Vor! 15) [Mushimusume Aikoukai (Nakamura Yukitoshi)] OnaSupo Panzer Erika Hen (Girls und Panzer) [English] {Doujins.com}
[Kouka Ryouhei (Yanagi Kyouhei)] El-tentacle Birth Lady’s Mk.B PHASE-2