Derpy flew into the TARDIS. It was pitch black. "Doctor?" Derpy wispered, she heard a thud by the controls. "I told you to leave!" The Doctor's vocie boomed. "Doctor you have to stop this!" Derpy yelled. "What do you know about this?" The lights flickered on and Derpy saw the doctor. His coat was gary, his mane black and messy and his eyes where yellow. "Doctor don't let him get to you." Derpy flew over to the Doctor, he punched at her, but she douged. "You don't know anything." He hissed. "Doctor, I know you're in there don't let Discord control you." Derpy said softly, she looked into his eyes, she could see the cold eyes of Discord blocking his own soft eyes. "This isn't you." The Doctor widened his eyes. "How do you know me?" He sneered, he was sounding harsh but looking into the mares eyes was like looking into the past. "Your TARDIS was invaded." Derpy wispered. The 1st Doctor appered beside her, "You regenerated into another pony, The TARDIS was stolen," The second Doctor appered, "You were an amazing sicencetist," The 3rd Doctor appered "You saved the pony race with two poines and a scraf." The 4th Doctor appered "You became a "Back to the basic" pony," The 5th appered. "You became a pony wholoved questions and riddles," 6th Doctor " You had to regenerate to be safe," 7th Pony doctor "You became a romatic but youknew you couldnt," 8th, "You helped a girl from a attck," 9th "You earned my heart!" Derpy screamed out. The Doctor stepped back. He saw all his past selfs. "Your just going to throw away all the work, pain, saddness, happyness, joy, sorrow they had to go throught. Your just gonna though everything away?!?" Derpy begain to glow. "You would never do that!" SHe opened her eyes, just white. The Other doctors begain to float. The Doctor saw it, every memory he had ever encountered, every pain, heal, sorrow, happiness, joy. The Doctors begain to disapper, into him, one by one. "That's not you!" She yelled
BOOM
Derpy opened her eyes to see she was in the TARDIS, she spotted the Doctor laying on the ground. She ran up to him. "Doctor?" She asked shakly. His coat had turn back brown and his mane dark brown. His eyes fluttered open, blue. "Derpy?" His asked quietly.'Tears begain to flow from Derpy's eyes. "Your back, Your Back!" She yelled happily and flung her arms around him. He wrapped his arms around her. "Thank you." He cried happily. Derpy lefted herself from him. "Doctor, I love you." Derpy wispered smiling. "I love you Ditzy." He wispered back then placed his lips upon her own. They kissed for what seemed like an hour. They realsed. "Doctor!" Derpy said suddnly. "Oh yes!" He said and sprung from the floor. They both ran to the TARDIS doors and opened them. They saw Ponyville completely destoryed but the hole in the sky had disappered. "Amethyst and Dinky!" Derpy said and ran out of the TARDIS but stopped. "Doctor?" She turned to see the Doctor standing in the frame of the TARDIS. "I can't Derpy, I just can't." He said. Derpy walked up to him. "Doctor..." Derpy looked in his eyes, tears formed. "I have to leave, and never come back i caused to much harm to you and ponies." He turned around to the inside of the TARDIS. "Doctor... I understand..." Derpy said slowly. She walked up to him and grapped his hoof. He looked up. "Derpy.. please." He had tears on his cheecks. "I love you Doctor Whooves." She wispered slowly and kissed him,he kissed back. They let goof each other. "I love you Ditzy Doo." He cried as he spoke. "I will die one day and on that day I will remeber every memory I had with you, bad and good. I will rember the things we saw, the place we went to, the days of happinessand the days of saddness." Derpy lookedup at the Doctor, he was in shock. "I will rember you." Derpy began to cry herself. "I will rember you, everything we did, every moment we spent togther, every battle we battled, every loss we loss and every win we won." The Doctor put his hoof up to Derpy's mane allowing both her eyes to show. "I will remeber every right you did and every wrong I did, I will rember your amazing life and you amazing eyes." Hesaid with a giggle as Derpy giggled as well. "I will rember you Derpy Hooves." The Doctor pulled away from Derpy and Derpy pulled awayfrom the Doctor. "Good-bye." Derpy said shakly. "Good-bye the Doctor said turning his head looking at Derpy Hooves for the last time. Derpy stepped out of the TARDIS for the last time and heard a sound she would never hear again.The TARDIS faded away leaving Derpy standing where she was alone. "Thank you." She smiled and went off to find Amethyst and Dinkey.
HEY fellow Brony or peguasister so this isn't the last tale this is just my cannon of what would happen if the did have to leave each other so yeah :D