In the 2014–2015 season, Higuchi became age-eligible for international junior competitions. Having opened her season at the Asian Trophy, she made her Junior Grand Prix (JGP) debut in Ostrava, Czech Republic, taking silver. With a gold medal at her second JGP event in Dresden, Germany, she qualified for the 2014–15 JGP Final. Higuchi won the Japanese national junior title in November before competing at the JGP Final in Barcelona, Spain. Ranked fifth in the short program and third in the free skate, she finished third overall, behind Evgenia Medvedeva and Serafima Sakhanovich. She then took the bronze medal in her senior national debut at the Japan Championships. In her first appearance at the World Junior Championships, she won the bronze medal after placing third in the short program and second in the free skate.