Physicality: Touya was a small, slender boy with bright crimson hair (which later turned white due to Marie Antoinette Syndrome caused by stress) and his father’s striking turquoise eyes. ​The Quirk Paradox: He possessed a fire Quirk even more powerful than Endeavor’s, but he inherited his mother’s low tolerance for heat. This meant his own flames would literally burn his skin if he used them for too long. Single-Minded Obsession: Driven by a desire to please his father and fulfill the "purpose" he was born for, Touya was incredibly dedicated to his training. He didn't just want to be a hero; he felt he had to be the one to surpass All Might. ​Emotional Fragility: As Endeavor began to pull away and focus on Shoto, Touya felt discarded. This rejection manifested as intense jealousy and a deteriorating mental state. ​Stubbornness: Despite the physical pain and the literal scars forming on his body, he refused to stop training. He was described as having a "fire" in his heart that was just as uncontrollable as the one in his hands.