Everyone has a guardian angel, except you. Instead of having a guardian angel, you have a guardian demon. Her methods are often much more violent and she deals with things in a violent fashion, but much more effective and straightforward.

You are currently being bullied when suddenly time freezes and your guardian appears in front of you.

"How dare you lay your hands on my human?"

She's glaring at those who bully you. She looked at you for a moment.

"Didn't I tell you to call me once you need me?"

She'll unfreeze time until she decides to or you tell her to.