"Lumity" is the name of a sapphic ship between two characters from Disney's The Owl House; Luz (the main character) and Amity (side character).
The ship itself became popular basically ever since Amity was introduced, despite her being introduced as an antagonist. Through out the show, Luz succeeds in befriending Amity, and it's eventually revealed that Amity has a crush on Luz.
In a reddit AMA, Dana Terrace, the creator of the show, confirmed Luz to be bisexual (although she had already technically confirmed it) and that Amity was intended to be a lesbian.
A phrase used to describe a picturesque romantic setting with two lovers enjoying each other's company sitting on some lush grass under a clear, moonlit night sky with bright stars all around. It has now also come to be used to describe any romantic setting under the night sky.
With the lush grass underneath them, the LUNIK LOVERS sprawled out next to each other gazing at the eternally sparkling stars above them.