
Quick answer — Yuuho Iwasato worked on Ascendance of a Bookworm Side Story (Theme Song Lyrics), Code Geass: Akito the Exiled - The Wyvern Divided (Theme Song Lyrics), Cowboy Bebop: Yoseatsume Blues (Theme Song Lyrics) and 2 more anime.
Yuuho Iwasato worked on Ascendance of a Bookworm Side Story (Theme Song Lyrics), Code Geass: Akito the Exiled - The Wyvern Divided (Theme Song Lyrics), Cowboy Bebop: Yoseatsume Blues (Theme Song Lyrics), Code Geass: Akito the Exiled - Memories of Hatred (Insert Song Lyrics), Code Geass: Akito the Exiled - The Brightness Falls (Theme Song Lyrics).