Abbyxryo
Xaon may be a sun to Siana-someone who lights her up even in her dull life. He painted color into her monochrome world, as if it were a constant reminder that she was worthy enough to make people around her proud.
But too much light could also burn people, and that's how Xaon become to Siana right now. Seeing how Xaon shines in a room full of people, she questions herself whether she's worthy enough to stand by his side. Or whether she's worthy enough to receive affection from someone who's out of her league.
Xaon for Siana is a safe place, but at the same time, he was someone she looked up to. And she, witnessing how bright he was, makes her afraid to step closer into his life. Having low self-esteem, constant self-doubt, and a lack of confidence is something that can't be changed overnight. But I also hope she realizes that, as much as she wants to distance herself from him, he's also hurting from being left unseen.