Gravity falls return (Bill Cipher X Demigod)

He's staying

I watched Bill admiring his new form. "Yeah yeah, you're fricking gorgeous now what about my end of the deal?" I said with no enthusiasm and annoyed."Yeah about that, sorry fireball ( apparently that's his new nickname for me. I guess because of the 'Bipper' incident) but my powers were used in this ritual and they'll have to regenerate. But now you can admire my gorgeous new body. Like what you see?" He said narcissistically. I blushed to feel uncomfortable. I was about to say something when Bill suddenly pinned me against the tree." Ya know I always thought about how hilarious pain is during possession. Imagine how would it feel like now! Maybe you can take care of that fireball." He said. He was so closer to my face and I didn't feel comfortable being that close to him." Bill can you not be so close to me? It's making me uncomfortable" I said." C'mon, don't you wanna Hurt me fireball?" He purred." Let me go and get away from my face Cipher!" I said. He leaned closer but a Hand grabbed his shoulders, turned Cipher around, and Got him away from me. "Do as she says" my brother growled. "Fine, I'll go but don't forget about our deal fireball. I'll be watching. I'm always watching." He said in his demonic voice and disappeared in a flash (haha I Just made the flash reference) "Are you ok Mia." Percy asked. He's always been a little overprotective over me. He might seem like no threat but you can't judge a book by its cover. He'll snap your head like a tree branch if you hurt someone he loves. But most of the time, he's sweet and kind and he makes me laugh with dumb jokes. He's the brother I always wanted in my mortal family, but there I'm the oldest. Anyway... "I'm fine seaweed brain. Shouldn't you be with Annabeth back at camp?" I asked. "Oh about that I sent an Iris Message to Chiron and he gave us a mission here. I was looking for you to tell you and place to camp when I saw that guy bugging you. And nobody bugs MY little sister. That's MY job" Percy answered. I smiled and now things didn't look that bad anymore. But then Percy asked: "wait what kind of deal was that guy talking about Mia?"