Winner think Red Velvet is a piece of cake. Red Velvet say Winner is a bunch of losers. They built a line between each other they thought they wouldn't cross ever. But the line was not something they promised not to cross, they just said it. And by saying, the possibility for them to cross is big. And they crossed it. Five love stories about teenage trainees that will change your mindset that idols' lives is not all about hectic schedule. Well, before they debut. But what kind of history of theirs when they were trainees? "Between hate and love, there's a thin line. The one you can easily cross." © KIMCHISAURUS