Quick answer — Keiichi Okabe worked on Yuki Yuna is a Hero: The Hero Chapter (Music), Yuki Yuna is a Hero: The Washio Sumi Chapter (Music), Wandering Son (Music) and 4 more anime.
Keiichi Okabe worked on Yuki Yuna is a Hero: The Hero Chapter (Music), Yuki Yuna is a Hero: The Washio Sumi Chapter (Music), Wandering Son (Music), Yuuki Yuuna wa Yuusha de Aru: Washio Sumi no Shou 1 - Tomodachi (Music), Ultimate Otaku Teacher (Insert Song Composition), CAT SHIT ONE: THE ANIMATED SERIES (Music Producer), KamiErabi GOD.app (Music).
