Soren was beyond exhausted as he dragged himself through town. The only good thing about that magic outburst was that an idea came to him, an idea that only a certain somepony can help him with. Soren decided to try to find Luna or Twilight. As Soren was walking through town, Rarity saw the fatigued alicorn and trotted over to him.
"Hello, Soren," she said. "You look like you can barely stand. Did Rainbow Dash overtrain you again?"
"I'm fine," Soren said while breathing hard. "I just need some rest. Do you know where Twilight or Luna are?"
"They should be at the library, but Soren, I'm glad I found you. I have been meaning to tell you something." Soren sat down while Rarity continued to speak. "Has Twilight told you about what happened when you disappeared?"
"About what Cain did or the fact that you all turned your backs on me?" Rarity hung her head with guilt. Soren sighed. "I'm sorry it came out like that. I'm not mad at any of you. Go on."
"No, no, you have every right to be sour with us. We were so afraid of getting ourselves hurt or worse that we forgot the fact that you are one of our friends. And friends should always be there for other friends, even if they can't offer assistance. They do not have to be there physically to help; they can offer moral support."
"I'm happy to hear that, and can I just say that you four don't have to help me if it means putting you girls in danger. I couldn't bear it if I caused any of you to get hurt." Soren started shaking now. "I really need to get some rest. I'll see you later, ok?"
"I cannot make any promises about staying out of the way. Friends should help each other no matter what." Soren smiled and waved goodbye to his unicorn friend as he walked away.
As Soren continued to tread through Ponyville, he noticed that he was strangely more fatigued than he first realized. He only performed very few spells, so why is his body already giving up? Soren's train of thought was halted as he caught sight of the Ponyville Library. Gathering his remaining strength, Soren walked up to the front door and knocked a few times. When there wasn't an immediate answer, Soren yelled out Twilight's name. Although he had to strain to yell that loud, Soren's voice was loud enough to get Spike's attention. The little dragon opened the door and saw Soren.
"Heya, Soren," Spike greeted. "Do you need something? Perhaps a bed?" Spike laughed as he saw that Soren was about ready to collapse on the doorstep.
"Are Twilight and Luna here?"
"Yeah, Twilight's showing the princess her star chart upstairs. Come on in." Soren nodded and followed behind Spike as the two walked towards the stairs. Spike stopped right at the foot of the stairs. "Hey, Twilight! Soren's here! He wants to talk to you and the princess!"
"Be right down!" answered the voice of Twilight Sparkle. Within the minute, Twilight Sparkle, followed by Princess Luna, walked downstairs.
"Are you feeling better, Soren?" Princess Luna asked as the two mares walked towards Soren and Spike.
"I guess. I seem to be very fatigued from a certain spell I did. You two most likely saw it. The pillar of fire?" Everyone there nodded. Soren sighed again and decided to sit down.
"Spike said you wanted to talk to us," Twilight said. "What is it?"
"Luna, can you come here real quick?" Without saying anything, the princess walked up to Soren and sat beside him. Soren then proceeded to whisper in his marefriend's ear. "Find the Doctor for me." Soren then collapsed and fell asleep. Twilight looked at Luna, who was still trying to figure out why Soren needed the Doctor.
"What did he say?" Spike asked. "Is he sleeping?"
"Soren is fine; he is simply exhausted. Twilight Sparkle, you and Spike keep watch over him. I need to do a quick favor for Soren." Luna started walking towards the front door, but Twilight's voice stopped her.
"Wait, Luna!" The blue alicorn turned her head. "At least tell me what you need to do." Luna looked at Twilight, then back to Soren, then back to Twilight.
"Very well. Soren wishes for me to find a certain somepony. That is all he said." Luna continued to walk out of the library, leaving Twilight Sparkle and Spike more confused than they would like to be.
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It was nighttime by the time Soren woke up. Groaning, he looked around and saw that the only source of light was a lit candle on the table in the center of the library's main room. Soren walked over to it and just stood there. He turned away from the flame so he can adjust his eyes to the darkness. When Soren's eyes were finally adjusted, he took another look around the room. This time he saw Twilight Sparkle sitting in a chair next to a desk. She was staring at him as if she was psychically pulling information out of him.
"Hey, Twilight," Soren said groggily. "Can I help you? You look like you're trying to read my mind."
"Who did you tell Luna to find?" she asked.
"It's private."
"Does it involve the Doctor?" Soren paused.
"...yes."
"Thank you for being honest with me. That's all I wanted to know."
"All I want is some information from him, that's all."
"He always owes somepony information, even me."
"Twilight..."
"I'm fine, Soren. I just...miss him."
"Maybe this will help you. Is Doctor from this world?"
"How did...? No...he's not."
"From the stories you've told me, I can guess that ever since the Doctor showed up, his enemies or animals from his world have also shown up. This also leads me believe that the longer the Doctor stays here, the more our two worlds combine. Maybe he's trying to fix this, and as a result, he is leaving more often and staying away longer. I know for a fact that if he loved you, he would never want to leave you for good." Twilight smiled at Soren's ridiculous theory.
"Thanks for trying to cheer me up, Soren, even if that idea of yours is entirely crazy." Soren gave a small laugh. "It's late. We should try to get some sleep. You can stay here if you like."
"Thank you. I'll see you in the morning. Goodnight."
"Goodnight." Twilight proceeded to go to her bedroom upstairs, while Soren decided to sleep on the couch downstairs.
Soren found some blankets and brought them over to the couch. Once he was comfortable, the alicorn stared at the ceiling for a few minutes, thinking about the past that the Doctor and Twilight shared. 'Hopefully everything works out for them' was Soren's last thought as he drifted back to sleep.