Shoki Kasahara (笠原 将生 , Kasahara Shōki ) (born January 9, 1991 in Fukuoka) is a Japanese professional baseball player who last played for the Yomiuri Giants in Japan's Nippon Professional Baseball. His younger brother Taiga is also a professional baseball player currently playing for Fukuoka SoftBank Hawks. His father Eiichi is a former professional baseball player.
Shoki Kasahara's family has several professional baseball players.
Shoki Kasahara's father and brother also play professional baseball. I think the system is confused by vague terms such as "several."