For anyone who needs a break. A sleepover that never ends. Talk about life, guys/gals/nonbinary pals, things you did, music you're listening to, anything you like, etc. etc. No bullying or harassment. Just a place to relax.
The realm of King Arthur is an oftenly well known fantasy world. You would be at least a little hard-pressed to find someone who didn't know of Camelot, Merlin, King Arthur and Excalibur. Roleplay as anyone, even OCs, with a few exceptions.