Miraculous: Origins of a Tween Hero

Chapter 4

Marinette took me to a house on the right bank of the Sen. When she knocked on the door, I heard a voice that sounded vaguely familiar. "Come in." The voice said, "who is this you brought with you?" We went into the room and sat down. "Have we met?" I asked very confused. "I don't think so. Marinette what's the problem?"
Marinette sighed, "Master. She figured it out." He looked at me and asked how I did it. I explained how I did it and then Master Fu walked over to his gramophone and typed in the code when a box came out. It was called the Miracle Box. All the miraculouses were stored there. He passed me what looked like a smaller version of it.
"Izzie Agreste. Here is the miraculous of the Dragon, which grants the power of Perfection. You will use it for the greater good. Can I trust you?" He asked. Of course I immediately agreed. When I opened the box there was a choker necklace inside and a ball of light flew around the room. It then appeared in front of me. It looked like a mini dragon. "Hi! My name is Longg and I'm your kwami. When the magic words are spoken, I will transform you into a dragon themed superhero!" I was frozen in shock. Was I even awake? If so then my dream of being a hero and helping people had finally come true.
Master Fu asked Marinette to wait outside because he wanted to chat with me before I left. "I presume you know Cat Noirs identity too?" I was very confused by this, "How did you know?" He smiled.
"He called me before you showed up, I don't suppose you know Hawk Moth's identity too?" I whispered to Master Fu who Hawk Moth is. My father. Gabriel Agreste.