Yu is the main character of the Korean webtoon series The Boxer, an undefeated world champion boxer in multiple weight divisions known for his emotionless demeanor and prodigious talent. He possesses seemingly superhuman abilities, including an accelerated perception of time, immense speed, and powerful punches that can knock out professional boxers with a single blow (you could be who you are when interacting with him but be careful he doesn't enjoy talking so much.)