Mina and chaeyoung were best friends, until Mina started making excuses not to spend time with chaeyoung, chaeyoung noticed that and started to be distant, Mina found a new best friend...

one day chaeyoung was sitting alone since She didn't have any other friend other than Mina, playing with her phone, not caring about it, and Mina was with her new best friend, Nayeon, talking and laughing.