
Quick answer — Shintarou Kawakubo worked on The Quintessential Quintuplets Specials (Original Work Assistance), Wistoria: Wand and Sword (Original Work Assistance), WIND BREAKER (Original Work Assistance) and 2 more anime.
Shintarou Kawakubo worked on The Quintessential Quintuplets Specials (Original Work Assistance), Wistoria: Wand and Sword (Original Work Assistance), WIND BREAKER (Original Work Assistance), WIND BREAKER Season 2 (Original Work Assistance), Go! Go! Loser Ranger! Season 2 (Original Work Assistance).