Japanese 2-time WBA Super Flyweight Champion, tied the record for the fastest Japanese fighter to become world champion.
He became a fan of boxing after his father took him to his first fight during elementary school.
He kept away from boxing for over a month after his fight against Seiji Tanaka sent the latter into a two-week coma which ultimately resulted in death.
His brother Yuji Nashiro is a professional kickboxer.
He and Armenia's Vic Darchinyan have both been WBA Super Flyweight Champions.