[MSL]

칠성사이다 -- a drink from Korea

  It is a Korean (South Korea's) drink -- 칠성사이다 ("Chilsung saida" in Latin, or "Chilseong saida"). '칠성' means 'seven stars', i.e. 'Big Dipper' (http://en.wikipedia.org/wiki/Lotte_Chilsung).
 Here is a photo of the can: . I like this drink. It's from Lotte (in Korean -- 롯데)^{(More about this corporation: http://www.lotte.co.kr)}.

[Alexa]

 And I'd like to add that it's a 250 ml can. The drink is "Pure, Clear, Caffeine Free".
 The Chinese name of this Korean drink is "乐天七星冰柠檬碳酸饮料"。