Si Yang answers honestly that it makes him a bit scared because if one of them says that they don’t want to continue, it’s the end for them, so that’s what’s so scary for him, those words. In her BRI, So Yeon says that she knew that their contract was ending, but she didn’t think about it that deeply thinking that she just had the thought that they’ll just continue and have fun together. She continues by saying that looking at Si Yang’s expression and listening to his words, it started to hit her.