The rest of eternity with the Master. Like this.
It was a horrible thought, for this to continue on forever. However, an eternity with the Master in it's own did not sound quite so terrible. The Doctor wasn't entirely sure how to respond to this, either fortunately or unfortunately, the Master provided an answer for the time being.
"I don't particularly like this outfit on you…" he looked the Doctor over. "Let's try something else. I think you'll like this better." He stroked the side of the Doctor's face and behind his ears gently. He reached over to the pile of clothing and picked out a piece of bright red fleecy…something. "Isn't it soft?" The Master rubbed it against his cheek and tickled the Doctor under the chin. He folded his head down out of natural reaction. "I'll let you get changed. Don't take too long this time."
The Master got up and left the room once again, leaving the Doctor, collar, maid's dress and all, alone. The Doctor wasn't entirely sure what it was, so he unfolded it and laid it out. It was a bright red fleece footy-pajama suit. The Master sure had some strange…fetishes, if you could call them that, the Doctor remarked to himself. Again, he did not particularly want to wear it, but he stripped out of the dress in nothing but his underwear, and put on the red PJs, he face getting flushed out of embarrassment.
The Doctor, despite the Master's wishes, did not call him back in. Finally after about four minutes of waiting, "I'm coming back in there. You had better be decent."
He didn't respond, but the Master walked in and smiled contentedly. "That's much better for you." He walked over to his Doctor who looked extremely annoyed. "Now sit down." He pointed to the floor. The Doctor felt he was in no position or clothing to argue.
The Master hated beyond hate that this regeneration was slightly shorter than the Doctor. It always made him uncomfortable and he couldn't stand it. So, he would have to make the Doctor sit.
The Doctor glared at him, and the Master stuck out his lower lip. "Is someone cranky, Doctor?" he knelt down above him, mussing his mussed hair. "What would you like?"
"For you to listen to me."
"I'm all ears, Doctor." He smiled arrogantly.
"Let the humans go. I'll play whatever games you want but let them go."
"I don't need to free them to have you. I have everything I need, right here."
"What about the drums?" the Doctor said, eyes serious.
"What of them?"
"Don't you need them gone?"
There was a very long silence. "Why do you care?"
"Because I want to help you."
"All you've every done is hurt me and everyone around you." He hissed. "You destroyed Gallifrey and you try to redeem yourself going around as the Doctor and fixing everything." The Master burned into him, "But you can't fix me."
The Master's fist flew on to the side of the Doctor's cheek, the Doctor letting out a cry as he fell back from the impact. The Doctor felt tears prick his eyes as the pain the Master had inflicted on him was absorbed. His face just felt throbbing but inside his soul, the one person who he cared so deeply for and made him so sad had just cut him. He didn't want to face the Master about the Time War. He didn't want to have to confront the thought that he'd wanted to keep dormant forever and he didn't want the Master to hate him. So desperately he didn't want hatred.
He tried whatever he could to hold them back, but the tears spilled out as he berated his face to be still, to be dignified. He felt himself curl up, melting on to the floor.