
Quick answer — Saya Shinomiya voices Oume in Hakuoki ~Demon of the Fleeting Blossom~ Dawn of the Shinsengumi, Chihaya Ohtori in Rewrite: Moon and Terra, Makoto Imai in Brothers Conflict.
Saya Shinomiya voices Oume (Hakuoki ~Demon of the Fleeting Blossom~ Dawn of the Shinsengumi), Chihaya Ohtori (Rewrite: Moon and Terra), Makoto Imai (Brothers Conflict).
Oume is voiced in Japanese by Saya Shinomiya.