On August 21, 1991, when Obe was 16 years old, she debuted for the Japan national team against China. She was a member of Japan for 1991, 1995, 2003 World Cup, 1996 and 2004 Summer Olympics. She played at 1993, 1995, 1997, 1999, 2001, 2003 AFC Championship, 1998 and 2002 Asian Games. She played 85 games and scored 6 goals for Japan until 2004. She was also the captain.