Quick answer — Nana Yamaguchi voices Isabella Montovani in Romeo's Blue Skies, Maria in Mobile Suit Gundam: The 08th MS Team, Kikuko Kanbe in The Millionaire Detective - Balance: UNLIMITED and 3 more characters.
Nana Yamaguchi voices Isabella Montovani (Romeo's Blue Skies), Maria (Mobile Suit Gundam: The 08th MS Team), Kikuko Kanbe (The Millionaire Detective - Balance: UNLIMITED), Shizuka Namino (Captain Harlock Space Pirate), Teshusse (Captain Harlock Space Pirate), Misato (Mazinger Z).
Isabella Montovani is voiced in Japanese by Nana Yamaguchi.
