A boy. 100%. Through and through.
The penis she was now seeing was proof enough of that. Sar found herself blushing and covering her eyes. She turned away from her now-male friend Cor and cried out.
"Gah! Why didn't you tell me you were a guy now, homie?"
She gasped and placed a hand to her throat. "Whoa! Was that my voice? Hello, hello." she tested. Cor, meanwhile, pulled a towel down from the rack and wrapped it around his new male body. He looked down at himself, seemingly for the first time.
"Huh? I'm a guy now? When did that happen?"
"Last night," Sar replied, turning back around. "Around the same time I got these." She cupped her new breasts in her hands and jiggled them. She smirked inwardly as she watched Cor's eyes follow them.
"M-Maybe we should get dressed," he added awkwardly. "Wear something gender-appropriate so we can show the folks ASAP."
He did have a point. Only if you looked at her figure could you tell that Sar's body was now female. Cor was lucky; as a male, walking around shirtless gave the world all the proof it needed of his new gender.
Cor and Sar's families were all seated at the same table, sharing breakfast and waiting for news of their offsprings' new genders. Sar peered around the corner into the kitchen, clad in a green sundress.
"M-Mom? Dad?" she said shakily, still unused to her new voice. "Uh, you know how you always wanted me to be a boy?" She stepped out, revealing herself in all her glory.
"Well, surprise," said the suddenly-shy new girl. Her parents gasped.
"And Cor?" Cor's mother asked, almost sounding like she didn't want to hear the answer.
Cor walked in then, clad only in a pair of boxers. Sar did her best not to look at him.
"Yo."