Sakamoto began her season by winning the silver medal at her JGP event in Riga, Latvia, and finishing fourth at her JGP event in Toruń, Poland. Due to a stress fracture in her right shinbone, she stayed off the ice in October and resumed skating without jumps in November. At the Japanese Championships, she placed fifth competing in the junior event and thirteenth on the senior level. Sakamoto was selected to compete at the 2016 Winter Youth Olympics. She placed fifth in the short program and sixth in the free skate to finish sixth overall.