
Quick answer — Rei Nakahara worked on How a Realist Hero Rebuilt the Kingdom Part 2 (Prop Design), Martian Successor Nadesico (Mechanical Design), Yu-Gi-Oh!: The Dark Side of Dimensions (Mechanical Design) and 3 more anime.
Rei Nakahara worked on How a Realist Hero Rebuilt the Kingdom Part 2 (Prop Design), Martian Successor Nadesico (Mechanical Design), Yu-Gi-Oh!: The Dark Side of Dimensions (Mechanical Design), How a Realist Hero Rebuilt the Kingdom (Prop Design), Blue Seed (Design Works), Origin: Spirits of the Past (Art Design).