Seiran Kobayashi voices the character in the new season
A new promo is here for the My Hero Academia anime's fourth season, which is zipping into view on October 12. The latest preview teases some of BLUE ENCOUNT's "Polaris" opening theme song and shows off a few key scenes, including a look at the mysterious girl Eri, voiced by Seiran Kobayashi (Oriko in Okko's Inn).
Here's another look at Eri's design:
Via Comic Natalie