
Quick answer — Momoko Saitou voices Maria Nanadan VII in Tenchi Muyo! War on Geminar, Junichi Tachibana in Amagami SS, Solty Revant in Solty Rei and 12 more characters.
Momoko Saitou voices Maria Nanadan VII (Tenchi Muyo! War on Geminar), Junichi Tachibana (Amagami SS), Solty Revant (Solty Rei), Uma (Renkin San-kyuu Magical? Pokaan), Naoko Asada (Genshiken 2), Hatabou (Mr. Osomatsu), Nazuna Takanashi (Wagnaria!!), Kokage Kuga (Sketchbook ~full color's~) and 7 more.
Maria Nanadan VII is voiced in Japanese by Momoko Saitou.