Tenchi Muyo’s Seiyuu For Mihoshi Passes Away Wow. Yahoo! Japan News is reporting that MIZUTANI Yuko, who was the voice of Mihoshi in all of the various Tenchi Muyo! canon and spinoff titles as well as the voice of Mihoshi’s mother Mitoto in Tenchi Muyo! GXP, has passed away from breast cancer at the ageRead the full article!