This World's God Tree and the Girl Feiyin

Night fell.

Lying on the bed in his room, feeling the warmth from the lava, Chiba remained awake for a long time.

He was growing more and more proficient at controlling Chakra. So much so that he had created a release technique of his own, Earth Lava, as soon as he learned Lava Release.

He injected Chakra into the earth and made scorching magma erupt at a spot of his choosing. Although it was called a release technique, it was really just an application of Chakra.

The technique was still in its initial stage and wasn't very powerful. For now, he only used it as a lamp and a heater.

Come to think of it, that voice from earlier today...

"Hmph! You finally remembered. I thought you'd forgotten!"

Suddenly, a girl's voice reached his ears, full of indignation.

Chiba jumped, but having heard her once during the day, he wasn't scared half to death.

"Who exactly are you?" he asked.

"Hmph! Want to see me?"

"What do you think?"

"Say 'Feiyin is the cutest in the world' in your head, and you'll be able to see me!" The girl's voice was thoroughly haughty.

Chiba nodded.

Then he silently said Ninjutsu Chamber.

"Y-you! Who told you to say that?" The girl's voice reached his ears again.

Having arrived in the Ninjutsu Chamber, Chiba slowly opened his eyes.

But the sight before him stunned him.

Before him was an enormous snow-white dragon. The dragon resembled a Western dragon and radiated draconic might. Yet she wasn't as stocky as he had imagined; proportionally speaking, she was a little... slender. At that moment, the snow-white dragon's eyes were fixed on him, seemingly with a hint of ill intent...

A dragon!

Chiba was so shocked he couldn't speak.

"Hmph! I knew you were a coward!" Seeing Chiba's stunned expression, the snow-white dragon snorted disdainfully.

Chiba murmured, "Such a fierce dragon... and yet she has a voice like that..."

"..."

"Kid, do you have a death wish?!"

The dragon beat her wings with an imposing force. Yet her voice remained as clear and pleasant as an ordinary girl's.

"Your name is Feiyin?" Chiba had a vague idea of her name.

"Hmph! That's right, I'm Feiyin!" the girl dragon said haughtily.

"So... where is this? The Ninjutsu Chamber? Your home? Or inside me?" Chiba asked.

Feiyin was somewhat surprised by the human before her. She hadn't expected a mere human like him to be able to guess so much.

"All of them," she answered.

Chiba began to examine the dragon before him carefully, then sat down. When he saw her tail, he suddenly laughed. "You couldn't be a Tailed Beast, could you? Inside a ninja like me?"

Feiyin was shocked. "Y-you... how does a mere human like you know so much?"

Chiba was shocked too.

Holy shit, I was just making a random guess. Did I actually get it right?

"I don't think I've seen you among the Tailed Beasts. Could you be from a side story?" Chiba asked.

The dragon Feiyin glared at him. "Don't compare me to those Tailed Beasts you know."

Chiba fell silent.

"The God Tree... you should know about it, right?" Feiyin said.

Chiba nodded. In the world of Naruto, the God Tree was the Ten-Tails, the Nine Tailed Beasts combined.

"It's a little troublesome to explain. You can think of me as... this world's Ten-Tails," Feiyin said vaguely.

"But you only have one tail," Chiba said in shock.

"Why are you focused on that?! Shouldn't you be asking why there are two Ten-Tails?!" Feiyin couldn't help retorting.

"Oh, all right then. Why do you say you're the Ten-Tails?" Chiba asked.

"I don't know!"

"???"

"Then who told you?" Chiba was confused by this haughty, muddleheaded little female dragon.

"The cheat-selling old man," Feiyin answered.

Chiba seemed to remember something. His eyes widened. "So you're the voice of the Ninjutsu Chamber's artificial idiot... ahem! Artificial intelligence?"

"I was bored..."

"Then why are you inside me?" Chiba asked.

At that, Feiyin's eyes filled with indignation. "It's all because of you!"

"Me?" Chiba pointed at himself.

Feiyin said indignantly, "Do you know that body of yours is the most perfect body I ever created with Yin-Yang Release?! If that dumbass Acnologia hadn't been chasing me down when I was merging with it, how could you have had a chance to slip in?"

"Me? Slip in?"

I don't even fucking know how I got here.

"Just as I was about to merge with it, Acnologia ambushed me, spouting some dumbass nonsense about wiping out all dragons. Then your soul entered this body. In the end, I had no choice but to take your body to your girl's hometown and stay inside you," Feiyin said.

Chiba understood a little.

"So... am I your Jinchūriki now?" Chiba asked.

"More or less, though I really don't want to admit it."

"Doesn't that mean I can be as badass as the cheat-selling old man?" Chiba was a little excited.

"In theory... probably, but not right now." Feiyin sounded a little embarrassed. "After Acnologia ambushed me, I lost most of my power. My current amount of Chakra is probably about the same as one of the Tailed Beasts you know."

"So you're still the One-Tail, then?" Chiba said.

"No! No!" Feiyin tried her best to explain. "Can the One-Tail give you the Lava Release Kekkei Genkai?"

"No, but he can give me Magnet Release."

"Y-you..." Feiyin felt that if she kept talking to him, he would make her die of anger.

"Are you a dragon or a tree?" Chiba asked the question that had been bothering him ever since he saw her.

"A tree..."

"Then why do you look like a dragon?"

"Because the first creature I saw when I came to this world was a dragon, and then... I took the shape of a dragon..."

"Oh, you transmigrated here too?"

"What else did you think? I'm the one who brought Chakra to this world!"

"Yeah, yeah, all right. You've lived so long, yet you lose your temper like a little girl..."

"I..." Feiyin was left speechless by him.

"Haha, I'm kidding, I'm kidding." Chiba laughed and scratched his head.

"Hmph! You scumbag, acting like we're already close!"

"..."

Suddenly, the enormous white dragon before him shone with a brilliant light. Before long, she transformed into a petite little girl.

The little girl had snow-white, silvery hair tied in twin tails. She wore a pure white dress, and her fair skin glowed like white jade. She had a breathtakingly perfect face, though at the moment she wore a displeased expression that made her look rather endearing.

"You really are a kid..." Chiba was utterly shocked.

"You! Even the odd years of my age are more than your whole life." The diminutive Feiyin stood before him, speaking in a huff.

"Looks like you're an old maid," Chiba quipped.

"By the way... why am I called Uchiha Chiba? What happened to my original name?" Chiba asked.