Artist: kobuichi (27)

[Yuzusoft] NobleWorks Official Visual Fanbook [Digital]

DRACU-RIOT! Official Visual Fan Book

[Yuzusoft] SENREN BANKA OFFICIAL VISUAL FAN BOOK [Digital]

[Yuzusoft] SABBAT OF THE WITCH OFFICIAL VISUAL FAN BOOK [Digital]

[Yuzu Soft] Amairo Islenauts Official Visual Fanbook [Digital]

[Yuzusoft] RIDDLE JOKER OFFICIAL VISUAL FANBOOK

SABBAT OF THE WITCH OFFICIAL VISUAL FAN BOOK [Chinese][星幽漢化組]

YUZUSOFT 10th Anniversary Book YUZUANI

[Yuzusoft] Riddle Joker Offical Visual Fan Book

RIDDLE JOKER オフィシャルビジュアルファンブック ONLY Illustrations

[Yuzusoft] YUBESHI 2

[Kuroneko-kan, Tyatsune (Muririn, Kobuichi)] Yandere no Hon. [Chinese] [靴下汉化组] [2008-09-07]

[Yuzu Soft] Senren*Banka Official Visual Fan Book

Yuzusoft - サノバウィッチ VFB

(C84) [Kuroneko-kan, Tyatsune (Muririn, Kobuichi)] Maid-san no Hon [English]

(C84) [Kuroneko-kan, Tyatsune (Muririn, Kobuichi)] Maid-san no Hon

(C75) [Yuzusoft (Kobuichi, Muririn)] YUBESHI!

DRACU-RIOT! Official Visual Fan Book

(C69) [Kuroneko-kan, Tyatsune (Muririn, Kobuichi)] CANDY POT

(C74) [Kuroneko-kan, Tyatsune (Muririn, Kobuichi)] Yandere no Hon [English] [Ignis]

[Studio Mebius (Hiraki Naori, Kobuichi, Asuka-pyon)] Zetsubou Doujinshi (Zetsubou)

(C70) [Kuroneko-kan, Tyatsune (Muririn, Kobuichi)] Ramune

(C76) [Kuroneko-kan, Tyatsune (Muririn, Kobuichi)] Josou Danshi no Hon

(C75) [Kuroneko-kan, Tyatsune (Muririn, Kobuichi)] Houkago Campus

(C74) [Kuroneko-kan, Tyatsune (Muririn, Kobuichi)] Yandere no Hon.