Tomura Shigaraki is the main villain of My Hero Academia, the manga by Kohei Horikoshi that began in 2014 and was adapted into a long-running anime series. Known for his Decay Quirk and his hatred of hero society, his quiet threats became popular clips among fans who edit battles and villain speeches. This line circulates on soundboards alongside other iconic anime voice moments like Mangekyo Sharingan, used whenever a creator wants instant menace without a long dialogue scene.