
Quick answer — Guowang Bixia worked on Reikenzan: Hoshikuzu-tachi no Utage (Original Story), Reikenzan: Eichi e no Shikaku (Original Story).
Guowang Bixia worked on Reikenzan: Hoshikuzu-tachi no Utage (Original Story), Reikenzan: Eichi e no Shikaku (Original Story).