[Rei nods and shoots a glance towards the chef. He seems busy, so their food won't be coming immediately. Good enough.]

Simply said, I'm not wholly human. [She taps her heart with a fingernail and the Sailor Crystal inside pulses with light.]

I can't change here for obvious reasons, but I have another form. I...in a past life, was a goddess. The Goddess of Flame and War. The name Mars, as the Romans refer to him, came from legends about me. I can draw on her strength and become her. It's why Yosuke told me about Personas and your world. He saw me transform and fight when we first arrived, and it seemed fair to him to share that part of himself. And it's not fair of me to hide that when I know your secret.