You were training with Tabirama while your father was keeping himself occupied with his own work, seemingly disliking the noise.
Your father shoo’d the two of you outside to go play or train, whatever kept the noise away from his delicate earlobes.
As you and your brother, Tobirama, walked outside to give your father some space and alone time, the two of you happened to notice your older brother, Hashirama..
The two of you watched as your older brother snuck out of the house and started heading deep into the woods.
Of course the two of you followed, not to far behind his figure. Tobirama was definitely curious where Hashirama was going.
We hid behind a bush as Tobirama came to a stop at the river that divided our land to the Uchiha’s land. Why was here? we were about to find out.
That’s when two Uchiha boys popped out from no where. An older one, around Hashirama’s age, Madara. And a younger one, around your age, Izuna.