Now, for a rather large oversight on the parts of our main characters. Thanks to whitetiger2194 for pointing it out!
Is There a Doctor in the House?
Because of all the fights going on all over, Sora only noticed the explosion because it was so close. He'd barely turned toward it in time to see the rock flying in their direction.
Goofy had seen it sooner. "Look out!" he yelled frantically, pushing the king out of the way. There was a sickening crack as the rock slammed dead center into Goofy's forehead, hurling him all the way to the stone wall that surrounded the area. He hit the wall with a thud and just laid there, perfectly still.
"Goofy!" Sora cried, he and Donald both racing over.
Mickey ran a few steps after them, slowing to a halt with a soft "No..."
"Hey!" Donald said, kneeling next to the knight and shaking him. "You're the king's captian! You've gotta get up!"
"Come on, wake up!" Sora begged. Even in his sleep, Goofy was never this still... No, no, no way, this is not happening...
Donald pounded his hands on Goofy's chest a few more times. "I'm sorry about the ice cream," he said, trying to use that stupid joke Sora didn't know but always, always, made Goofy laugh.
"Goofy?" the king whispered.
Donald jumped back to his feet, drawing his staff out. "Cure!" he called, green and yellow light blossoming in the air above his fallen friend.
Sora stared at him a moment, surprised, then nodded, digging through the pouches on the sides of his pants. Come on, he knew he had a potion in here somewhere...
"Fellas, I don't think..."
"Don't say it," Sora said, refusing to look at Mickey. He could hear the pain in the small king's voice, but right now he couldn't acknowledge the reason behind it. He finally found that potion, uncorking it and carefully pouring the liquid into Goofy's mouth. "It has to work. It just has to."
...Sora didn't know what he'd do if it didn't. Because this was his fault. If he'd left to find Riku and Kairi like the king had said... But he couldn't stand the thought of abandoning Leon and the others, either... And now Goofy was...
He swallowed hard, blinking back tears as Donald cast another Cure. "Come on, Goofy. Please wake up."
He felt a small hand on his shoulder, and looking over, found King Mickey had walked over to join them. Mickey gave him a weak smile, then called his Keyblade. "Heal," he said, green and yellow flowing from the tip to Goofy.
Goofy's eyes blinked open and he bolted upright with a yelp, looking around before rubbing his head. "Y'know, that really hurt," he said.
"Goofy!" all three of them exclaimed. Donald and the king launched themselves at the knight, hanging off him, while Sora simply sagged in relief.
"You fellas weren't that worried, were ya?" Goofy asked. "Gawrsh, I get hit on the head all the time!"
"Well," Mickey said, standing back and grinning at his old friend. "We promised we'd finish this all together, didn't we?"
"All for one and one for all, right?" Donald frowned suddenly, then wound up his staff and whacked Goofy hard on the knee. "Don't you ever do that again!"
Goofy yelped, grabbing at the abused limb. "That hurt, too!"
Sora laughed weakly in relief, watching the exchange and feeling the tightness around his heart start to lessen. Goofy was okay. Things were going to work out. As long as his friends were with him...
"Sora, thank you."
The Keyblade master looked over to see Mickey, still at his side as Donald continued to berate Goofy for being so careless. "What for?"
Mickey got a sad, faraway stare on his face as he looked to the side. "For not letting me give up on another friend. I don't know what I'd do if..."
Sora smiled. "I understand. You don't have to say it."
Mickey nodded gratefully. "You know, you remind me a lot of a good friend of mine, one I haven't thought about for a long time. Maybe I'm ready to believe again..." The king aimed a smile up at the teen, old confidence returned. "Someday I'll have to tell you about him. But first we gotta help our friends here."
"Right!" Sora agreed. Grinning, he slung an arm around Donald and Goofy's shoulders, interrupting what sound like a threat to tell Clarabelle Cow something. "Come on, guys. Time to save the world again."
...That's odd. I distinctly remember deciding to write this as a humorous oneshot because I was having trouble with planning how to do it seriously. And then this happens. Huh. Guess this is why I'm not funny. That Birth By Sleep reference surprised me, too...