Whoah there! The NINKI prediction's pretty nice. Based on your comments, it is probable that KARA's 4th single would sell more than 150k at the first week...That's pretty good. I expect it to sell more than 200k copies considering their popularity and Japanese fans' faith in KARA. That's why I love J-Kamilias. They finance their fandom! HAHAHA BTW, KARA ranked 5th at the Oricon First Half sales at 2.15 billion. Does that mean it's only for Jet Coaster Love? The reason why I came here was to check whether Go Go summer was included and now I remembered it is not yet released. I'm so happy for KARA... I'm sure most of the sales are for JCL and some for their previous singles but I doubt it includes their previous singles/albums since the ranking's for the 2011 release right? OMG! It just proves that KARA is daebak!
My prediction would be
First day- 100-150k
First week- 250-300k