His mother , Kumi , played basketball in the top leagues of Japan and competed with the Japan women 's national team .
Watanabe was born on October 13 , 1994 , in Miki , Kagawa , in Japan into a family with a rich history in basketball .
Watanabe 's mother , Kumi , played basketball in the top leagues Japan Japan and competed with Japan Japan women 's national team .
Watanabe was born on October 13 , 1994 , in Miki , Kagawa , in Japan into a family with a rich history in basketball .