
Quick answer — You Iwaida worked on Umamusume: Pretty Derby - Beginning of a New Era (Color Design), HINAMATSURI (Color Design), The Yakuza's Guide to Babysitting (Color Design) and 7 more anime.
You Iwaida worked on Umamusume: Pretty Derby - Beginning of a New Era (Color Design), HINAMATSURI (Color Design), The Yakuza's Guide to Babysitting (Color Design), Kase-san and Morning Glories (Color Design), Li'l Miss Vampire Can't Suck Right (Color Design), Papa no Iukoto wo Kikinasai!: Pokkapoka (Color Design), Nagasarete Airanto (Color Design), Otherside Picnic (Color Design) and 2 more.