hint towards their spotify playlists xuan begins with foreshadow because as soon as he realizes this he immediately tries to find a way to connect himself and vyn so that they can both be happy while vyn starts with fate hinting at the fact that she believes nothing good will happen if she continues down this path and ultimately has to accept the fact that in most cases she will never be happy and runs away from her problems (so xuan chases after vyn's timeline)