I am Izuna Uchiha, the brother of Madara Uchiha. My brother is the leader of the Uchiha Clan. I respect him. We train sometimes together because we are the both with the most power in our family.
Many Uchiha died because of the Senju and I want to save our Clan. It wouldn't accept when they win about is in a war. I hate Tobirama Senju, but I accept that he is a strong enemy.
I don't like many social contacts.
I hate weak people that don't stand to their weakness.