Ten Tailed Puppet Master (from fanfic.net)

Chapter 8

Naruto was staring blankly at the Juubi after her answer; he was going to die in five years? What? "Huh?" He said flatly.

Juubi would giggle if the situation weren't so dire, so she settled for a sad smile. "Because of the influx of my chakra during that last moment, your body is crashing from yokai poisoning. For the next five years, your body will slowly break down each tenketsu and the organs attached to them, shutting your body down, slowly and painfully. There is only one cure, but I don't know if you're willing to do it." She explained sadly.

Looking at her with determination, Naruto smirked his foxy grin. "I'll do whatever it is if I can live! I'm not ready to die! I still gotta put Sasori-teme back in his place, we need to finish our yokai and puppet training, and… I don't want to leave you." Naruto finished softly, capturing her in a hug and her lips with his own. Juubi was beyond surprised by his declaration but slowly fell into the hug and kiss, wrapping her arms around his shoulders and neck, grabbing the back of his head to pull him deeper into the kiss, adding as much passion as she could as she began the process. As their lips fought in this sensual war, Juubi poured her youkai into his body, slowly changing him so his body can take the yokai from before. After five minutes of their make-out session, Juubi stepped back as Naruto began to change.

He grit his teeth, knowing this was the process Juubi mentioned, and was ready for the pain. …No he wasn't. The pain his body experienced was unimaginable, as he felt like every cell in his body was on fire, exploding and reforming repeatedly, as his chakra coils felt like they were filled with acid and wouldn't melt away, forever feeling the burn. He stifled a scream when he felt his bone's snap out of place, only to grow into new places, his muscles tearing and stretching, as his entire body grew too big for his clothes, save for his boxers, which were still the light blue with little Gama-chan's all over it; he was twelve, what do you want from him?!

After what felt like an hour of this process, Naruto was on his knees, panting heavily, looking down at his new body. He was now as tall as some fully grown adults, like that jumpsuit freak, Maito Gai, his nails were sharpened into claws, he could feel his canines were longer, and a quick feeling of his face told him his whisker marks were more feral and jagged, his hair having grown to almost their level. Checking on his chakra control, his body exploded with chakra, as he seemed to take the form of his body made of ethereal flames, an abstract skeleton of symbols all over his body, a sort of whirlpool on his stomach, shoulders, and the palms of his hands, lines of squares like spines up his body and down his limbs, six tomoe around his collarbone. Deciding to try something, he willed a chakra limb to form, as it grew out of his new body.

"This is your Juubi Chakra mode. You have full raw control over all ten tails in this form and are nothing short of a god. But there's a catch…" Juubi began explaining, only to sweatdrop when Naruto attempted to form a Rasengan, only for it to explode in his face. "Your chakra control has gone to beyond shit; you need to train all over again. But the good news is my yokai won't kill you in five years; congratulations, Naruto-kun, you are now a hanyou." Juubi piped happily, completely ignoring the smoking Naruto at her feet from the explosion of the failed Rasengan.

Naruto immediately shot up, grabbed Juubi into a hug, and captured her lips with his, kissing her for almost a full minute. He quickly thanked her and exited the mindscape, intent on starting his youkai training… again.

(Waking world)

Naruto woke up to find himself in what appeared to be a containment cell for criminals, but the hushed murmurs outside the room of the Sandaime asking if he was okay placated his negative thoughts that the old man saw him as a criminal when the yokai infusion began, if the copious amounts of chakra-suppression seals all over the room alluded to anything. Apparently, when he was thrashing around inside his mind, his body did the same, as well as the unstable waves of Juubi's yokai flooding the entire village, and thus, the Sandaime acted quickly.