Hayato Arakaki plays for a baseball team that competes in what Nippon Professional Baseball league?
Hayato Arakaki:  He debuted in 2013 for the Hokkaido Nippon-Ham Fighters. Hokkaido Nippon-Ham Fighters:  They compete in the Pacific League of Nippon Professional Baseball, playing the majority of their home games at the Sapporo Dome.
i don't know