
Quick answer — Chitose Morinaga voices Umiko Ahagon in NEW GAME!, Karen Jinryou in Shomin Sample, Usagi Nejire in Pastel Memories and 19 more characters.
Chitose Morinaga voices Umiko Ahagon (NEW GAME!), Karen Jinryou (Shomin Sample), Usagi Nejire (Pastel Memories), Gaako (Welcome to Demon School! Iruma-kun Season 3), Ban Zhang (Take My Brother Away! 2), Miaomiao Miao (Take My Brother Away!), Haku (BOFURI: I Don't Want to Get Hurt, so I'll Max Out My Defense. Season 2), Milana Shidrowa (Sword Art Online Alternative: Gun Gale Online) and 14 more.
Umiko Ahagon is voiced in Japanese by Chitose Morinaga.