Kamilisha sentensi ifuatayo: Yeye alishindana kwa Japan katika
2017 FIBA Under-19 Basketball World Cup, wastani wa timu-bora 20.6 pointi na 11.0 rebounds mashindano. Katika raundi ya kufuzu kwa Kombe la Dunia la FIBA la 2019, Hachimura alifunga alama 25 kusaidia Japan kushinda Iran 70-56.