
Quick answer — Seikou Nagaoka worked on Strike Witches: The Movie (Music), Tenchi Muyo! Ryo-Ohki (Music), Strike Witches 2 (Music) and 9 more anime.
Seikou Nagaoka worked on Strike Witches: The Movie (Music), Tenchi Muyo! Ryo-Ohki (Music), Strike Witches 2 (Music), Tenchi Muyo! Tenchi Universe (Music), Strike Witches Operation Victory Arrow (Music), Chaika -The Coffin Princess- AVENGING BATTLE (Music), Muv-Luv Alternative: Total Eclipse (Music), Strike Witches (Music) and 4 more.