[Kozouya (Eiki Eiki + Zaou Taishi)] HaruNatsuAkiFuyu [Tonigobe]
[Eiki Eiki + Zaou Taishi] Haru Natsu Aki Fuyu (Spring Summer Fall Winter) [Lililicious]
(Zaou Taishi and Eiki Eiki) Love DNA XX Chapter 1-5 (English)
(Zaou Taishi and Eiki Eiki) Love DNA XX Chapter 1-6 (English)
[Eiki Eiki] Please Look at the Stars in the Night Sky (Code Geass) [English]
[Zaou Taishi & Eiki Eiki] Gundam Seed DJ Kujibiki de Pon! [RAW]
[Kodomokeibitai (Eiki Eiki)] Cherry
(C77) [Kozouya (Eiki Eiki, Zaou Taishi)] Kozouya Dokuhon MIX 2009 (Various)
(C72) [Kozouya (Eiki Eiki, Zaou Taishi)] Kozouya Dokuhon MIX (Various)
(C79) [04U (Misasagi Tasuku)] Eiki Ryoujoku (Touhou Project) (korean)
(C81) [Hakurakutei (Kusaka Eiki)] Who Are You? (Touhou Project)
(SC45) [Hakurakutei (Kusaka Eiki)] Nanda! Sono Oppai wa!! (Touhou Project) [Digital]