[Hamiltan] Wa no Kuni ni Sumou-tori to Shite Sennyu Shite Shimatta Kokogaku-sha | The Archaeologist Who Has Infiltrated the Wano Country As a Sumo Wrestler (One Piece) [English] {Doujins.com}
[Kogaku Kazuya] Follower Flower (COMIC Penguin Club Sanzokuban 2016-07) [Chinese]
[Anthology] Little Girl Strike Vol. 2 [Digital]
COMIC Penguin Celeb 2014-09
[CELTRANCE (Kogaku Kazuya)] Maki-chan ga Hajimete Nico-chan to Ecchi suru Hon (Futanari Ban) (Love Live!) [English]
COMIC Penguin Celeb 2015-06
COMIC Penguin Celeb 2015-09
[Anthology] Love Shota 03 ~Josou Shounen~
Ace Attorney_ We've been doing this tango for years
(C99) [CELTRANCE (Kogaku Kazuya)] Yume Ochi Mazoku (Machikado Mazoku)