
Quick answer — Daisuke Izuka worked on Gate 2 (Original Character Design), Gate (Original Character Design), GATE 2: Jieitai Kano Umi nite, Kaku Tatakaeri (Original Character Design).
Daisuke Izuka worked on Gate 2 (Original Character Design), Gate (Original Character Design), GATE 2: Jieitai Kano Umi nite, Kaku Tatakaeri (Original Character Design).