
Quick answer — Akira Ootsuka worked on Trinity Seven: Eternal Library & Alchemic Girl (Weapon Design), GOOD NIGHT WORLD (Prop Design), TRINITY SEVEN (Weapon Design) and 1 more anime.
Akira Ootsuka worked on Trinity Seven: Eternal Library & Alchemic Girl (Weapon Design), GOOD NIGHT WORLD (Prop Design), TRINITY SEVEN (Weapon Design), Dog Days Season 3 (Weapon Design).