Kayla Park is the younger sister of Seonghwa Park a member in her boyfriend's band called Ateez. Kayla's boyfriend is Mingi Song the main rapper performer and dancer of Ateez. Mingi doesn't know of Kayla's depression until he found her one day in the middle of the night in the bathroom crying in the shower. At first he didn't know what to do the first time he saw it so he asked Seonghwa about it and he didn't really know either till one day that had to leave the dorms for comeback promotions and Kayla stayed behind. When the hate tweets were getting to be too much for Kayla she ended up having a mental break down in front of her friends and brother. Luckily Mingi wasn't there but when Wooyoung went to go find him Mingi already had a feeling that something was wrong.