Three - Erza Scarlet
"Hey, Myst," Erza said, smiling as she sat down next to the blue-haired boy.
"Uh, hi, Erza," he said nervously.
Erza frowned, concerned by the tone of his voice.
"Are you okay?" she asked.
"Yes," he said. "I'm Myst."
Erza raised her eyebrows. "I know," she said. "We've met many times. I was at your house last week."
"Right, yes," he said, blushing deeper. "I see you all the time. It's nice to see you again. I like your hair."
"What?"
"Uh, I... like the... air."
He looked down and became very interested in his desktop. Erza blinked, confused by how he was acting. He seemed so nervous. He wasn't acting at all like Myst. He was acting more like-
"Jellal?" she asked.
"What?" he responded, looking up. Then he froze. "Wait, no! I'm Myst. Who's Jellal? No, I know Jellal. Myst's brother. My brother. I just look like him. I'm Myst..."
He trailed off, blushing furiously and looking upset.
"You've always been terrible at lying," she smiled.
"Dammit," he said. "I didn't last a single hour."
"Does Myst know you're here?" she whispered. "Does Sieg know you're here?"
"Of course," he murmured. "I'll explain later. Please, just pretend I'm Myst."
Erza smiled and turned to the front of the classroom as Gildarts started speaking.
"So," the teacher said, as everyone settled into their seats. "Another school year starts. We have a new face. Welcome, Lucy. We are also missing a-" Gildarts stopped and looked directly at Jellal. "Fernandes," he said. "I need to speak with you in my office."
"Sir?"
"Now."
Jellal got up and followed Gildarts out of the room. Erza hoped he wasn't in trouble. She knew Jellal could handle himself, but he was a bad liar. Gildarts had talked to Myst at length the previous year, so Erza doubted Jellal would be able to convince Gildarts that he was the same person.