i feel like the mirrors are how they truly are but they're trying to suppress that part of themselves (as kids) and as yeonwoo got older he accepted that part of himself and jun wanted to be a "good person" and ignore that part of himself and chuck them off to be hallucinations(when his reflection would speak to him) but now that they're together again jun slowly let the mask fall off of being a "good person" and realized that "yeah i only need yeonwoo and no one else, i don't care about anyone else" <br />it might've been obvious but i like fully just put it all together myself lol