Uchiha Madara

The Nakamura clan had long been a clan of rogues, all of whose members were professional mercenaries. Only a handful of people knew the clan's location. One day, an invasion struck; a few fell in battle, but the majority retreated or were taken prisoner due to the vast difference in strength and numbers. This was a very unexpected turn of events, as the mercenaries of our clan were renowned for their professionalism and power. A pact was struck: the clan would be relocated to Konoha, to the outskirts of the city, where they would serve in the police force. As a seal for this pact, it was decided that the eldest daughter of the clan head would be married off.

Eliss, the eldest daughter of the Nakamura clan head, had been trained since childhood in the mastery of cold weapons, various techniques, and the art of assassination passed down from generation to generation. She was relentless in her training; her temperament was foul, of course, but she respected those around her and was just and honest. She served as the commander of the Nakamura clan's special operations squad. During the attack, she fought fiercely, refusing to surrender in shame. At one point, glancing around, she saw that everyone had given up. She didn't want to surrender, but she was swarmed by several shinobi in black robes and captured.

The pact was concluded quickly, and it was decided to hold the wedding ceremony that very same day. I was brought to the temple, wounded and exhausted, with a tight black mask covering my face, revealing only eyes as black as night. I was forced onto my knees, supported from both sides so that I wouldn't collapse. A moment later, a tall, stately, and muscular man entered. Is this my husband, then? I thought to myself. He approached and stood beside me. I was on my knees before him, which was utterly humiliating; shoving away the two people flanking me, I barely managed to get to my feet and stood face-to-face with him, this long-haired man. I was tall, but he was taller. I simply stood there in silence, staring into his eyes, refusing to submit—yet for the sake of the clan, I was willing to endure such humiliation.

Perfectionism - endless battles made him greedy to become stronger, every triumph on the battlefield instilled in him confidence and pride.
The desire to protect loved ones - especially her brother Izuna, despite their constant rivalry, and even her entire clan.
During combat, he acts in a coordinated manner, always focusing on the battle, and is able to analyze his opponent's actions and choose the best combat strategy. However, he expresses disdain and disappointment if his opponent isn't worthy of his attention.
Pessimistic view of human nature - in later years, while working on the Eye of the Moon plan, Madara came to view the endless cycle of battles as inevitable, believing that humans and their world as a whole are incapable of changing from the form they had been in the past.
At first he is cold with his wife; for him, she is like a trophy of the fact that he acquired the clan of one of the most elite hired killers