[Kawamura Hirotaka] Hachido Nanabu no Koufukuron (Eudaemonics on 38.7℃)
[sachi-machi (Shiina Ayumi)] Hanpirei Koufukuron - Happiness to be inversely proportional to (Gundam Seed Destiny)
(J.GARDEN 41) [Kume (Minakami Riku)] Ura to Ura no Koufukuron
(SC2015 Winter) [Atarashiki(21)] Chuubou Kankin Graph (Gourmet Girl Graffiti)