He was named in Japan's team to the 2015 World Junior Championships in Tallinn, Estonia.

Sato ranked 17th in the short program, 14th in the free skate, and 15th overall.

Following his retirement from competitive figure skating, Sato became a coach.

He currently coaches at the Kinoshita Academy in Uji, Kyoto.

[1] His current and former students include: GP: Grand Prix; CS: Challenger Series; JGP: Junior Grand Prix Media related to Hiroaki Sato (figure skater) at Wikimedia Commons