Shigeo Nagashima Invitational Sega Sammy Cup  The is a golf tournament on the Japan Golf Tour. It has been played annually at The North Country Golf Club near Chitose, Hokkaido since 2005. The tournament typically took place the first week of July, but in 2019 it was played in late August. The course measured 7,167 yards and the par was 72. The purse was ¥150,000,000, with ¥30,000,000 going to the winner. Shunsuke Sonoda set the tournament record in 2013, shooting −20 (268) a score subsequently equalled by Ryo Ishikawa in 2019.