Age Nine
The years passed like water through fingers.
I trained. I grew. My Sharingan evolved to two tomoe in my left eye, one in my right—asymmetrical, strange, but functional. My chains manifested when I was seven, golden and blazing, and the elders called me the Whirlpool Prophet. I hated that name. I wasn't a prophet. I was just a boy who missed his mother and worried about his sister and trained until his bones ached because he had no choice.
Kushina grew too. By the time she was four, her chakra was already denser than most adult shinobi. She broke things without meaning to. She knocked over grown men with accidental bursts of energy. The other children were afraid of her.
So I invented the Spiral Suppression Seal. A small spiral on the back of her neck that absorbed excess chakra and released it slowly. It took me six months to design. When I finished, I brushed the ink onto her skin, and she sighed with relief.
"It feels warm," she said.
"That's the seal activating."
"Does it hurt you?"
"No."
"Promise?"
I kissed the top of her head. "Promise."
The letters from Tsunade started because I was bored and lonely and needed something to hold onto.
I had never met her. I only knew her name from my mother's old letters to Mito. But I had an idea—a crazy idea—for a messenger seal that could track a specific chakra signature across any distance. If I could isolate Mito's chakra from the old letters, I might be able to send a message to her family. To her granddaughter.
It took me three months to design the seal.
The pattern was based on the standard Uzumaki messenger seal, but I added a tracking matrix—a web of lines that would follow the chakra signature like a bloodhound following a scent. When I finished, the seal looked like a spiral inside a spiral inside a spiral. Nine layers, each one nested in the last.
The Seal of the Tracking Bird. I named it that because I was nine and not very creative.
I wrote my first letter on a separate piece of paper.
"To the Senju clan of Konohagakure,
My name is Ren Uzumaki-Uchiha. I am the son of Akari Uzumaki, who was the sister of Mito Uzumaki, who is your clansman's wife. I think that makes us distant cousins.
I have invented a new type of messenger seal. It is faster and more reliable than anything currently in use. I believe this seal could be valuable for communication between our villages.
If you are interested, please write back.
—Ren"
I folded the letter into a bird, activated the seal, and sent it flying toward the southwest.
Then I waited.
Three days later, a hawk landed on my windowsill. It carried a scroll sealed with the Senju symbol. I broke the seal with shaking hands and unrolled the paper.
"Ren,
You're Mito's great-nephew? She talks about you all the time. She says you have her sister's eyes.
I'm Tsunade. I'm ten years old. I'm going to be the greatest medic-nin in history.
Your messenger seal is interesting, but I don't care about diplomacy. I care about people not dying. Can your seal help with that?
Write back soon. I'm bored.
—Tsunade"
I read the letter three times. Then I smiled.
It was the first time I'd smiled in weeks.