
Quick answer — Nishii worked on VIRGIN PUNK Clockwork Girl (Mechanical Design), Muv-Luv Alternative: Total Eclipse (Mechanical Design), Neppuu Kairiku Bushi Road (Mechanical Design) and 5 more anime.
Nishii worked on VIRGIN PUNK Clockwork Girl (Mechanical Design), Muv-Luv Alternative: Total Eclipse (Mechanical Design), Neppuu Kairiku Bushi Road (Mechanical Design), Blassreiter (Original Character Design), Samurai Bride (Original Character Design), Samurai Girls (Original Character Design), Galilei Donna (Mechanical Design), The Seven Heavenly Virtues (Original Character Design).