
Quick answer — Sunsunsun worked on Alya Sometimes Hides Her Feelings in Russian (Original Story), Tokidoki Bosotto Rossiya-go de Dereru Tonari no Alya-san Season 2 (Original Story).
Sunsunsun worked on Alya Sometimes Hides Her Feelings in Russian (Original Story), Tokidoki Bosotto Rossiya-go de Dereru Tonari no Alya-san Season 2 (Original Story).