
Quick answer — Wakana Kowaka voices Akiko Oowada in Ace of the Diamond act II, Noriko-sensei in The Ramparts of Ice, Rie Kurebayashi in The Summer Hikaru Died and 12 more characters.
Wakana Kowaka voices Akiko Oowada (Ace of the Diamond act II), Noriko-sensei (The Ramparts of Ice), Rie Kurebayashi (The Summer Hikaru Died), Fuutarou no Sobo (The Quintessential Quintuplets Specials 2), Andou no Haha (INUYASHIKI LAST HERO), Assistant (Pop Team Epic Season 2), Hahaoya (Pop Team Epic Season 2), Katie McMillan (Why Raeliana Ended Up at the Duke’s Mansion) and 7 more.
Akiko Oowada is voiced in Japanese by Wakana Kowaka.