(C67) [Windmill (Various)] Windmill mini-booklet Hyper! (Happiness!) Hentai

(Reitaisai 13) [Happiness Milk (Obyaa)] happinessuwako (Touhou Project)

(C71) [Momo no Tsubomi (Various)] EruEru 26 (Various)

[BIG BOSS, HYPER BRAND (Various)] Yawakehon - The FEATHER book (Ragnarok Online)

(C67) [CIRCLE ENERGY (Imaki Hitotose)] Hime・Gakuen Chigokuhen Sonoichi (Hyper-Anna)

"Happiness!" Original Drawings and Illustrations

(C49) [Moriman Sho-Ten (Various)] KATZE 12 (Various)

(C67) [Happy Paranoia, Shikkokuno J.P.S. (Wanashiro Giovanna, Hasumi Elan)] King Harvest (Various)

[Windmill] Happiness! Visual Fanbook (Happiness!)

(C52) [Jushoku to Sono Ichimi (Various)] Sakura Janai Mon! Character Voice Nishihara Kumiko (Sakura Wars, Hyper Police, Card Captor Sakura)

Windmill mini-booklet Hyper!