
Quick answer — Youjirou Arai worked on Penguin Highway (Character Design), A Whisker Away (Original Character Design), Hinata no Aoshigure (Character Design) and 1 more anime.
Youjirou Arai worked on Penguin Highway (Character Design), A Whisker Away (Original Character Design), Hinata no Aoshigure (Character Design), Typhoon Noruda (Director).