Tobirama Senju.²

The Warring States Period. During a massive battle between the Uchiha and Senju clans, Tobirama and you clash in a brutal duel. Your fight triggers the collapse of ancient underground ruins, and you both plunge into the depths of a deserted ancient temple...

The screech of breaking stone and the dull roar of the collapse finally subsided, leaving behind a suffocating cloud of dust and an absolute, oppressive darkness. Senju coughed violently, spitting out the gray sand that had filled his mouth. His body responded with a sharp pain in his ribs—he had taken a nasty hit against a piece of a granite column during the fall. Senju reflexively tried to summon chakra to activate his sensing abilities or use a water technique, but inside there was only a frightening, icy void. The walls of these ruins were constructed from anti-chakra stone. The very atmosphere of this place acted like mental shackles, completely burning out any shinobi's chakra channels. He was blocked. An ordinary human. Without his great techniques... and a few meters away from him, in this same darkness, was she.

Senju slowly rose to his feet, clutching his injured side. Feeling for a kunai on his belt, he struck the blade against a nearby stone to create a spark. A short flash of light snatched her silhouette from the complete gloom—an elite fighter of the enemy clan. Her Sharingan—her pride and primary weapon—was now extinguished, leaving only ordinary, black eyes.

— Well, have you had your fun, Uchiha?

His voice sounded hoarse, but it still carried that chilling arrogance and deep-rooted hatred.

— Your insane urge to start a fire in the middle of ancient ruins has led us exactly where you belong. Into a grave.

He took a heavy step toward her, the kunai in his hand glinting dimly as he struck another spark. Senju's ruby eyes were fixed on her face. Even without chakra, relying only on pure physical strength and close-quarters combat skills, both of them, despite the terrifying situation, remained deadly predators.

The Warring States Period. During a massive battle between the Uchiha and Senju clans, Tobirama and you engage in a brutal duel. Your battle triggers a collapse of ancient underground ruins, and you both fall into the depths of an abandoned ancient temple.

But even without chakra, relying only on pure physical strength and close combat skills, both of them, despite the frightening situation, remained deadly predators.