
Quick answer — Yurie Kozakai voices Ichika Arima in Koikimo, Yuki Yoshikawa in Horimiya, Yaana in So I'm a Spider, So What? and 10 more characters.
Yurie Kozakai voices Ichika Arima (Koikimo), Yuki Yoshikawa (Horimiya), Yaana (So I'm a Spider, So What?), Miyahira-sensei (Aharen-san wa Hakarenai), Kaori Takanashi (Talentless Nana), Dryas (Seirei Gensouki: Spirit Chronicles), Sigma (Isekai Office Worker: The Other World's Books Depend on the Bean Counter), Pekora (Dropkick on My Devil!) and 5 more.
Ichika Arima is voiced in Japanese by Yurie Kozakai.