The White Chakra Seal of Youth
Kakashi- Midgetized
"He's drained too much chakra, I don't think he'll make it!" Sakura and Gai bent over the fallen Kakashi and checked his vitals, alarmed at their unhealthy slowness. Gai muttered a curse under his breath. If his vitals got much lower... there wouldn't be enough energy to keep his internal organs alive and there would be a funeral service rather than a welcoming service back in Hidden Leaf. Gai heaved Kakashi up onto his shoulders and looked at his own cell members, Lee, Tenten, and Neji, and then at Kakashi's: Naruto and Sakura.
"I'll take him back to Hidden Leaf, you guys can follow. If you think you can."
"Try to take him to the Fifth, maybe she can heal him!" Sakura called as Gai bounded away. Gai seriously doubted that anyone could heal Kakashi, not in the state that he was in. The stupid idiot had to have known that the Mangekyou Sharingan would take too much energy, even for him! Stupid stupid stupid! Kakashi wasn't showing any indication that he was still alive other than the worryingly shallow rising and falling of his chest, almost imperceptible, and the short twitches every now and then. Gai cleared his head, he had to focus all of his energy on getting back to Hidden Leaf as fast as possible.
Kakashi was dumped rather uncerimoniously onto a hospital bed and tended on by the many medical ninjas that bustled around the Fifth, but none of them were having any success in reversing the chakra drain; on the contrary, the drain seemed to be continuing even though there was nothing to use the chakra for. They were puzzled and perplexed, most of all frustrated, because if they couldn't solve this medical monstrousity, then they would lose possibly the strongest shinobi in Konoha, aside from the Legendary Sannin. Even Tsunade, the Fifth, a medical specialist, was not getting many results for Kakashi's energy drain. She could only conclude that the chakra was being used to stabilize his body. Today was a dark day indeed.
It was around that time that a rather peculiar man rode into town on the back of a lion, casting glances at the various stores and homes, wondering where in the Land of Fire they had all gone. Usually it would be full of women, children, and shinobi, particularly the ramen house in the middle of the street. Today there were only a few people milling about, mostly children, little children who should be in the Academy. He sighed and brushed back his white hair, revealing a very foreign looking headband that had the symbols of all the villages of the world somewhere on it, most prominantly the symbol of Hidden Leaf. There was some increased activity near the residence of the Hokage. He whistled to the lion and it changed its course to incorporate its new destination.
It wasn't a long ride, maybe ten minutes, and he was soon inside. The lion plodded after him, opening its jaws to yawn widely, and lifted a paw to brush weariness out of its eyes. There were many medical nin clustered around a door, and he questioned them. They looked at his headband wonderingly for a little while before he snapped, "What's going on here?", and they started and resumed their focus.
"Kakashi Hatake came back from a mission severely drained of chakra, the Fifth doesn't think he'll make it..." The nin, however, was talking to thin air.
The Fifth turned around quickly. "What are you doing here? Who let this man in?" The nin converged on him but he didn't move, and the lion opened its jaws and roared, making all activity cease. Kakashi twitched. He looked around the room quietly, then said, "What happened here?" Everyone shrugged in unison and he looked angry, striding purposefully to Kakashi's bedside.
"He's lying here with a unfathomable chakra drain then? What did he use to initiate this drain? Who brought him back here?" he cried, his voice rising. Gai raised his eyebrows. "I brought him. He used the Mangekyou Sharingan."
"Mange...kyou... IDIOT!" He smacked Kakashi's helpless face on the bed. "Stupid IDIOT! And I just bet he used that Chidori along the line too! IDIOT! AGH, what am I supposed to DO with you?" Another two violent smacks across the head and the room was deathly silent. "There's nothing you can do? Fifth?"
"No."
"Crap. I guess there's no choice then. There's one thing I can do to save him, but you're not going to like it."
"What?"
"I have to do it first."
"Fine, carry on."
The man stood up again and performed a series of increasingly complex handsigns, bit both of his thumbs to draw blood, and drew a curving seal on Kakashi's forehead. When that was finished he closed his eyes, breathed in deeply, and removed a white sabre from his belt. White chakra formed around the blade and he pressed it gently onto Kakashi's chest.
"Hatake Bloodline Trait: White Seal of Youth!" There was a flash of light and the Fifth and medical nin flinched, covering their eyes from the light until it faded a few minutes later revealing the man holding a very small, very young, very frightened Kakashi.
"Hey little guy, it's okay, you're okay now!" Kakashi just looked up at him numbly. Tsunade was absolutely livid.
"What the hell did you do? If he's just a little kid, how is going to fight for the village?"
"Aw, don't count him out now... he just needs a little time to get used to it, don't you Kakashi?" Instead of answering, Kakashi was more interested in pulling off the man's headband and playing with it. The Fifth put her fists on her hips. "You could introduce yourself."
"Who, me?" He picked up Kakashi again. "Jakashi Hatake, first son of Sakumo Hatake, Jonin of the Allied Countries. You see..." he plucked at his headband while still holding Kakashi with one arm. "I passed the Genin and Chunin exams in every village in every country."
Kakashi squirmed and flailed his arms around, then twisted to look up at Jakashi. "Daddy!"
"Eh? Um..." Jakashi's mind flitted through possible consequences and scenarios. "Hey... I'm not-"
"Daddy!"
"W-wait a minute Kakashi, I-"
"Daddy didn't commit seppuku! I knew it was just a dream!" he clung to Jakashi and he floundered, looking at the Fifth, then at Gai.
"What am I... um... yeah... of course I didn't commit seppuku... what a silly dream," he said it halfheartedly, letting Kakashi cling to him. Tsunade tapped her foot. "What are we going to do now that our Copy Ninja is a six year old and can no longer copy," she muttered, waving rather pointedly at his lack of a Sharingan Eye.
"Well..." Jakashi said, "We can continue to let him think that I'm Sakumo, and he can grow up. How's that? Remember... Kakashi was one kick-ass six year old!"