(C89) [Divine Fountain (Koizumi Hitsuji)] Ushio-chan Kankin Ryoujoku (Kantai Collection -KanColle-)

(C87) [Divine Fountain (Koizumi Hitsuji)] Minna no Kakko Kari (Kantai Collection -KanColle-)

(COMIC1☆9) [Divine Fountain (Koizumi Hitsuji)] Kuso Teitoku ga Ro-chan o Kaizou Shitemita (Kantai Collection -KanColle-)

(Reitaisai 10) [Divine Fountain (Koizumi Hitsuji)] Shinsei Fountain Soushuuhen Sonyo 4 (Touhou Project)

(Reitaisai 12) [Divine Fountain (Koizumi Hitsuji)] Shinsei Fountain Soushuuhen Sonyo 5 (Touhou Project)

(C78) [Love Fountain (Koizumi Amane)] Love Fountain [vol. 002]

(COMIC1☆8) [Divine Fountain (Koizumi Hitsuji)] Bad End wa Mitsu no Aji (HappinessCharge Precure!)

(Sukima Festival 7) [Cat Expert (Nekousa, Koizumi Hitsuji, TEC)] Neko Imouto to Shippori

(C82) [Divine Fountain (Koizumi Hitsuji)] Suwa Ero (Touhou Project)

(Kouroumu 6) [Divine Fountain (Koizumi Hitsuji)] Puni Puni Milky Sapphire (Touhou Project)

(Reitaisai 8) [Divine Fountain (Koizumi Hitsuji)] Scarlet Slave (Touhou Project)

(C74) [Divine Fountain (Koizumi Hitsuji)] Hisouten Remilia Story STAGE 9 Teki na Hon (Touhou Project)

[Tobidashi Chu-i] Suzumiya Haruhi ga Koizumi Itsuki no chou shokushu niyori ryoujoku, soshite h (Suzumiya Haruhi no Yuutsu | The Melancholy of Haruhi Suzumiya)

[Ndemotte (200X Zoom, KOIZUMI)] Sono Suteki na Mizusakiannai jintachi to... (ARIA)

(COMIC1☆3) [Divine Fountain (Koizumi Hitsuji)] shi-shi aso-to (Touhou Project)

[Tobidashi Chu-i] Suzumiya Haruhi ga Koizumi Itsuki no Chou Shokushu Niyori Ryoujoku, Soshite h (The Melancholy of Haruhi Suzumiya)

(Kouroumu 4) [Divine Fountain (Koizumi Hitsuji)] Thoughtrape (Touhou Project)

(Shuuki Reitaisai 5) [Divine Fountain (Koizumi Hitsuji)] Hamedori Nightmare Diary (Touhou Project)

(C94) [Shinsei Fountain (Koizumi Hitsuji)] Slave Reimu (Touhou Project)

(C94) [Divine Fountain (Koizumi Hitsuji)] Mizugi de Nakadashi Cirmiax (Touhou Project)

(C91) [Shinsei Fountain (Koizumi Hitsuji)] Ofuro de Rumiax (Touhou Project)

(SHT2017 Haru) [Divine Fountain (Koizumi Hitsuji)] PreCure Nakadashi a la Mode (Kirakira PreCure a la Mode)

(C85) [Divine Fountain (Koizumi Hitsuji)] Kouma Rangyaku (Touhou Project)

(Kouroumu 8) [Divine Fountain (Koizumi Hitsuji)] Immoral Desire (Touhou Project)

(Kouroumu 6) [Divine Fountain (Koizumi Hitsuji)] Puni Puni Milky Sapphire (Touhou Project)

[Ndemotte (200X Zoom + KOIZUMI)] Orange Plant - Mikan (ARIA)

[ndemotte MEGADRIVE (Nori-san + KOIZUMI)] Moeru Monsters (Yu-Gi-Oh!)

[Ndemotte (200X Zoom, KOIZUMI)] Ara Ara Dekkai Kinshirei (ARIA)

[Shinsei Fountain (Koizumi Hitsuji)] Marugoto Scarlet (Touhou Project) [Digital]

(SC41) [Divine Fountain (Koizumi Hitsuji)] Subterranean Taming (Touhou Project)

(Akatsuki no Utage 4) [Divine Fountain (Koizumi Hitsuji)] Yoiyami Rumia Onsen (Touhou Project)

(Reitaisai 5) [Divine Fountain (Koizumi Hitsuji)] 9 Bai Cirno Jiru (Touhou Project)

(Kouroumu 5) [Divine Fountain (Koizumi Hitsuji)] Hypnotic Taming (Touhou Project)

[Ndemotte (KOIZUMI)] maria Yomi Kanri (Hayate no Gotoku!)

(Comic Castle 2006) [nde Motte (200X Zoom, KOIZUMI)] Maria-san no Gotoku! (Hayate no Gotoku)