[@ACHTUNG]: Will take a look at yours again shortly, but I still really don't feel like your concept works well even with your explanation.

For everyone else, it seems I need to discuss the intended tone of the RP.

I didn't want to nail this down to a specific inspiration because I didn't want to give people too many preconceptions about the tone. I guessed that what would inform tone would at least be in part the rules of the Hex Night as posted in the OP.

The Hex Night itself was established to [i]avoid[/i] magical girls being killed because of the monster that would form every twenty years.

I'm absolutely fine with darker moments and nastier, ruthless antagonists(some of the NPCs will be just that) but this isn't Madoka, it's much lighter than that. Even girls who are utterly ruthless in the Hex Night were people the fairy picked because she thought they had potential as magical girls who protect the innocent.

What I'm saying is the tone isn't super light, but it's not incredibly dark like Madoka. It's serious, with darker moments, but also lighter ones.

And super crazy fight scenes between cute girls with crazy powers.

Hopefully this clarifies some things.

Ah, and to help clarify: Magical Girls are [i]pretty hard to kill[/i] due to protections granted to them during the transformation, so the no-killing rule isn't all that hard to follow at all. Disabling them and breaking their Hex Orb is the way to go.