
Quick answer — Mayu Mineda voices Alva hime in Sacrificial Princess and the King of Beasts, Kanako Mitsue in Stars Align, Ai Mashiro in DON'T TOY WITH ME, MISS NAGATORO 2nd Attack and 6 more characters.
Mayu Mineda voices Alva hime (Sacrificial Princess and the King of Beasts), Kanako Mitsue (Stars Align), Ai Mashiro (DON'T TOY WITH ME, MISS NAGATORO 2nd Attack), Nazuna Ayase (Chitose Is in the Ramune Bottle), Hazuki Yuiga (We Never Learn: BOKUBEN), Taeko Sugawara (Arifureta: From Commonplace to World's Strongest Season 2), Higuruma (In the Heart of Kunoichi Tsubaki), Odajima (Inexpressive Kashiwada and Expressive Oota) and 1 more.
Alva hime is voiced in Japanese by Mayu Mineda.