Keito Kumashiro

As a youth player, Kumashiro joined the youth academy of Japanese side Roasso Kumamoto and was promoted to the club's senior team in 2024, where he made forty league appearances and scored thirteen goals. Following his stint there, he signed for German side Eintracht Frankfurt II in 2026.

Kumashiro is a Japan youth international. On 25 March 2026, he debuted for the Japan national under-19 football team during a 1–0 away friendly win over the Uzbekistan national under-20 football team.

Kumashiro plays as a forward. Japanese news website Sports Bull wrote in 2025 that "standing at 181cm and weighing 76kg, Kamishiro possesses a formidable physique. He has consistently displayed powerful ball control, a fierce right-footed shot".

Kumashiro was born on 25 October 2007. Born in Kumamoto, Japan, he is a native of the city. Growing up, he attended Tokai University Kumamoto Seisho Senior High School in Japan.