[1][2][3] He is the son of former racing driver and Impul co-founder, Kazuyoshi Hoshino.
Hoshino announced his retirement from racing in Super GT after the 2021 season, and became the Technical Director at Team Impul in 2022.
[4] Hoshino also announced the creation of a new team in Super Taikyu, which would compete in the ST-Z (GT4) class with a new Nissan Z GT4.
[5][6] Outside of Japan, Hoshino competed in the Nürburgring 24 Hour Race on several occasions, finishing ninth overall in 2015 alongside Michael Krumm, Lucas Ordoñez, and Alex Buncombe.
In 2013, Hoshino participated in the Blancpain Endurance Series (now GT World Challenge Europe Endurance Cup with JRM Motorsport alongside Steven Kane and Peter Dumbreck.