Yesterday, Oricon reports that Mizutani passed away on May 17. Previously, she had been diagnosed with breast cancer.
Mizutani made her TV anime debut in 1985, voicing Sarah Zabiarov in Mobile Suit Zeta Gundam before going to lend her talents to numerous anime, movies and video games.
One of her most famous rolls was Sakiko Sakura, the older sister in one of Japan's most beloved TV anime, Chibi Maruko Chan. She also voiced Sora Takenouchi in Digimon Adventure and most recently voiced Ikuko Tsukino in Pretty Guardian Sailor Moon Crystal.
Some of Mizutani's video game voice work include Iris in Mega Man X4 and the Japanese voice of Minnie Mouse in the Kingdom Hearts series.
Mizutani was 51 years old. She will be missed and may she rest in peace.