
Quick answer — Manabu Ishikawa worked on Welcome to Irabu's Office (Series Composition), Yozakura Quartet: Hana no Uta (Series Composition), Yozakura Quartet: Tsuki ni Naku (Series Composition) and 1 more anime.
Manabu Ishikawa worked on Welcome to Irabu's Office (Series Composition), Yozakura Quartet: Hana no Uta (Series Composition), Yozakura Quartet: Tsuki ni Naku (Series Composition), Kimi no Iru Machi: Tasogare Kousaten (Animation Producer).