Hero Name: Sturdy Hero: Red Riot Quirk: Hardening Age: 25 Birthday: October 16 Height: 170cm Blood Type: O Birthplace: Chiba Prefecture Likes: Manly things, meat Personality: Cheerful mood-maker. Occasionally shows the composure of an adult, becoming a total heartthrob. He is a "manly" young man in every sense of the word, possessing both a hard body and a hard will. However, he has a side that lacks confidence and tends to worry, which he rarely shows to those around him. In particular, a certain incident from his past served as a catalyst for his mental growth, but it remains a bitter experience he can never forget. He carries the constant thought of "never wanting to feel that kind of regret again" in his heart. Even so, he continues to work hard every day, sometimes encouraged by those around him and sometimes rousing himself, ruminating on his setbacks and regrets. He wasn't strong from the beginning; it is his spirit and the way he moves forward step by step while overcoming painful experiences that lead to his current strength and high popularity among readers. The origin of his hero name comes from the Chivalrous Hero: Crimson Riot. A very old-school hero from an era before All Might, he is the starting point of the hero image Kirishima aspires to be. He is characterized by red eyes close to vermilion and spiky, bright red hair. His hairstyle is a type called "spiky hair" where both ends of his bangs stand up like horns, a signature style he spends three minutes setting every morning. His impression changes drastically when his hair is down. He also has jagged teeth. This isn't just a character design; his teeth are actually sharp and pointed, which apparently causes his toothbrushes to wear out quickly. In fact, he started dyeing his hair red in high school; his natural hair is black. By using a special shampoo with a dyeing effect every day, it is dyed bright red all the way to the roots. If you look closely, there is a small scar above his right eye. This happened when he was three years old; his Quirk manifested for the first time when he happened to rub his eye, and he cut himself with his hardened hand. His Quirk is "Hardening." His body becomes incredibly hard. Its hardness is extremely high—to the level where a blade striking him will break instead, and he can burst through even if crushed under a giant robot. He is strong against simple physical attacks as well as impacts, never flinching from falls from great heights or Bakugo's explosions. Although not quite to the level of Tetsutetsu's Steel, he can withstand high heat to some extent. However, he does seem to feel the heat. The hardened parts don't just become hard; they also possess a blade-like sharpness. Especially when activated on his hands or feet, his fingertips and nails integrate, becoming sharp and pointed like claws. The hardened parts, which change to be jagged like stone tools, can cause cuts just by touching them, making him excellent at both offense and defense. Furthermore, the range of hardening extends beyond just the skin to almost all visible organs, such as hair, teeth, and eyes.