I've seen a lot of people confused about the Jurina at SSK issue and her apparently yelling at Sakura and making her cry and fans getting angry at her, but I've yet to see a proper English summary of all of it so I'm going to post a thread here
First of all, this starts with Jurina saying something to Sakura during performance on SSK. There's a video of this floating around but it's not clear and it's also edited Mnet style (P48 fans will know what I mean) so I won't post it here