Rio Sasaki (佐々木 りお, Sasaki Rio, March 25, 2002) is a Japanese voice actress, actress, and former child actress. She was born in Saitama prefecture. She was affiliated with the Himawari Theater Company. Rio Sasaki (佐々木 りお, Sasaki Rio, March 25, 2002) is a Japanese voice actress, actress, and former child actress. She was born in Saitama prefecture. She was affiliated with the Himawari Theater Company.