In late 2003, Masuda became a member of the J-pop group NEWS to promote the Women's World Cup of Volleyball Championships. When NEWS went on hiatus in 2006, he and fellow NEWS member Tegoshi Yuya formed the singing group Tegomass.
Masuda joined NEWS in 2003 to support the Women's World Cup of Volleyball Championships, and later teamed up with Tegoshi Yuya from NEWS to form the singing group Tegomass after NEWS took a break in 2006.