The story begins during the second ninja world war
As we all know, there is no real information about who destroyed the Uzumaki clan
That's why in history I defined that the culprits of this are, fog village, cloud village and the root of Danzo
The main reason for this is that in the second war, leaf village, stone village and sand village were at war, but the fog and cloud were not, the second war is known for the great loss of ninja power in the villages where it came to point of needing to use children on the battlefield of war 3
But if neither Cloud Village nor Mist Village participated in the 2 war, why did they have losses of ninja? my theory is that they both attacked the Uzumaki clan
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Koji Uzumaki
Koji Uzumaki, his power is a unique tattoo, with the ability to make deals with the shinigami god in exchange for souls, he can summon Oni's seals, each seal is made on Koji's own body
Soul value;
Gennin's soul = 1 point
Soul of Chūnin = 10 points
Soul of Tokubetsu Jōnin = 100 points
Soul of Jōnin = 500 points
Soul of Jōnin Elite = 1000 points
Kage level soul = 5000 points
Super Kage Soul = 10,000 points
Soul of Demigod = 100,000 points
Koji Uzumaki is also of the purest Uzumaki lineage, he has the 2 special jutsus of his lineage;
Seal Chains and Healing Jutsu