
Quick answer — Ayaka Asai voices Hazuki Katou in Sound! Euphonium, Clara Valac in Welcome to Demon School! Iruma-kun, Kusuri Yakuzen in The 100 Girlfriends Who Really, Really, Really, Really, REALLY Love You and 41 more characters.











































Ayaka Asai voices Hazuki Katou (Sound! Euphonium), Clara Valac (Welcome to Demon School! Iruma-kun), Kusuri Yakuzen (The 100 Girlfriends Who Really, Really, Really, Really, REALLY Love You), Rola Sakuraba (Aikatsu Stars!), Mio Naruse (The Testament of Sister New Devil BURST), Nora Handa (Nora, Princess, and Stray cat.), Erika Kose (Kaguya-sama: Love is War -Ultra Romantic-), Koyuki (Descending Stories: Showa Genroku Rakugo Shinju) and 36 more.
Hazuki Katou is voiced in Japanese by Ayaka Asai.