Sato was born in Tokyo, Japan, to a Colombian father and a Japanese mother.[2] He started his football career at the age of 5, playing for local club Setagaya United. In 2014, he joined the Endo Football Academy, run by former Japan national team defender Masahiro Endo. In 2017, he attended the Jissen Gakuen High School in Tokyo, before entering the Meiji University.[3][4] In August 2023, he dropped out of Meiji with a few months before completing his graduation, as he decided to sign for the reserves team of Werder Bremen.[5][6]