A shopper is seen behind a Seven & I Holdings' logo at a 7-Eleven convenience store in Tokyo October 4, 2013. REUTERS/Issei Kato

A shopper is seen behind a Seven & I Holdings’ logo at a 7-Eleven convenience store in Tokyo October 4, 2013. REUTERS/Issei Kato

A shopper is seen behind a Seven & I Holdings' logo at a 7-Eleven convenience store in Tokyo October 4, 2013. REUTERS/Issei Kato

April 19, 2016 9:50 AM (UTC+8)