Doctor Who/Next-gen AU: The 13th Doctor goes to Hogwarts to avoid telling Yaz how she feels when she meets Albus Potter who is in the same place as her. (Written for THC)
"Did I do it?" Donna asked, as The Doctor stared at her with disbelief written all over his face. "That's impossible!" The Doctor exclaimed. Or the one where Donna gives The Doctor a run for his money and Harry is given an opportunity to go anywhere in time and space.