Meet Japan's 'Ninja Boy,' the prodigy who aims to stun Mayweather

This handout photograph taken by Rizin Fighting Federation on November 5, 2018 shows Japanese kickboxer Tenshin Nasukawa (right) posing during a press conference to announce his fight with US boxer Floyd Mayweather Jr. AFP PHOTO / RIZIN FIGHTING FEDERATION

TOKYO: Japanese kickboxer Tenshin Nasukawa, who aims to make history by defeating boxing superstar Floyd Mayweather Jr, claims his left-hook is like a 'bolt of lightning' that will 'change the world.'