Vailea is from Tonga before moving to Japan for schooling, where he attended Kashiwa High School. After school, he moved to Japan to study at
Nippon Sport Science University where he also played rugby between 2018 and 2022, playing originally as a loose forward. Having been schooled in Japan and being eligible on residency grounds, he represented Japan at U19 level, scoring a hat-trick against Ireland, In the same year he represented
Japan U20. ==Professional career==