Poster by taesee @ stereo hearts <3 (A/N) You could think of Krystal as f(x)'s Krystal. I just chose a random girl group member! Hahah, but yes, Kai and Chanyeol are in EXO. Just... not in this story. They're complete strangers! Hope I didn't confuse you too much?  You and Kai were the best of friends. "Are you two siblings?" That's the question you guys got asked the most. "Oh, no we're best friends," is