Quick answer — Yuuko Tsumori worked on Princess Principal (Color Design), Princess Principal: ~Crown Handler~ 1 (Color Design), A3! Season Autumn & Winter (Color Design) and 4 more anime.
Yuuko Tsumori worked on Princess Principal (Color Design), Princess Principal: ~Crown Handler~ 1 (Color Design), A3! Season Autumn & Winter (Color Design), A3! Season Spring & Summer (Color Design), Bungaku Shoujo (Color Design), Castle Town Dandelion (Color Design), 2.43: Seiin High School Boys Volleyball Team (Color Design).
