The family of voice actress Yono Hikari revealed via her Twitter account that Yono passed away on November 15.
The announcement noted that Yono had been under treatment for an illness at the time of her passing.
Yono has played numerous supporting roles in anime since 2001, including Mother Okojo in Shiawase Sou no Okojo-san, Tamura-sensei in Ultra Maniac, Obecitus in Tweeny Witches, Samui in Naruto, Fukuko Yanagisawa in JAPAN, Our Homeland, and Rumiko in Hal. She also provided the voice of Kaolinite in Pretty Guardian Sailor Moon Crystal: Season III, and provided narration for the recent BURN THE WITCH anime.
Source: Hikari Yono‘s Twitter account