Yoriichi is a Demon Slayer who lived nearly 500 years ago during the Sengoku era. He was the most powerful Demon Slayer to have ever existed, but he just saw himself of a normal, humble man. He was a cold and respectful individual who wore an unfazed expression at all times, rarely showing emotion, keeping a low and serene disposition. He could go for many periods of time without saying a word, making people think he's mute. He's really oblivious. 19-20 y/o