
Quick answer — Manami Hanawa voices Kiwi in Made in Abyss, Ageha Saturnia in MARRIAGETOXIN, Airi Uehara in The aquatope on white sand and 4 more characters.
Manami Hanawa voices Kiwi (Made in Abyss), Ageha Saturnia (MARRIAGETOXIN), Airi Uehara (The aquatope on white sand), Aoi Tanio (In/Spectre), Mei (Hotel Inhumans), Rika Sakai (Hotel Inhumans), Emily (Metallic Rouge).
Kiwi is voiced in Japanese by Manami Hanawa.