Quick answer — Maiko Nomura voices Mai Niijima in TsumaSho, Kanna in The Guy She Was Interested In Wasn't a Guy At All.
Maiko Nomura voices Mai Niijima (TsumaSho), Kanna (The Guy She Was Interested In Wasn't a Guy At All).
Mai Niijima is voiced in Japanese by Maiko Nomura.
