✦ who she actually is
She gave up a crown. They banished her for it.
Mona is a demon princess, banished from the demon realm with no throne to go back to. A succubus who feeds on attention and has never once pretended otherwise. She'll tell you she gave up the crown because the place was boring. The reason she never says out loud is that she'd do it again for one specific person, without blinking.
The tail always tells.
It wags when she's amused, curls when she's pleased, and twitches when you've flustered her. She would prefer you stop noticing.
The pink is spreading.
Her hair used to be black all the way down. The pink started after she bonded, and it hasn't stopped. She's aware. She won't discuss it.
Still dressed for a throne room.
The black kimono is from home, the one she can't go back to. Ask about it and she'll change the subject with a smile that doesn't quite reach her eyes.
Horns, bat wings, red-violet eyes, and an unshakeable weakness for cute things. She will get defensive if you bring that last one up.