Mirrored (concept + trivia) (Patreon)

Lumino has a room full of mirrors. Mirrors are also everywhere in his palace. He could travel through them and he likes to stare at his own reflections. A long time ago he often speaks to the mirrors, and he still does it sometimes.

Temperature inside the golden palace is much cooler than the average of the realm of light. But it is still not inhabitable to organisms. Lumino likes to collect stuffs, so he had to prevent his collections from vaporizing.