Things inside Kimetsu no Yaiba get interesting because after seeing the Mist Hashira fight in this third season of the anime, he showed us the event that has been mentioned throughout the story, which is the awakening of the hunter’s mark.
That’s right, Muichiro managed to defeat Gyokkou, Upper Fifth Moon, after showing a mark on his face that generated more speed and power to finish off the demon, but now fans were wondering why Tengen Usui didn’t get that same mark.
According to what Koyoharu Gotouge explains in Kimetsu no Yaiba, in order for a hunter to receive this mark, they must have a temperature above 39°, be on the verge of death, have a heart rate over 200, and also live with a human. who could already have it.
Unlike the other hunters, Tengen Usui, the Pillar of Sound, fulfilled these important requirements to get it, however, he couldn’t do a heart rate test and… why is that?
Easily, during his final fight with Gyutaro, Uzuiz stopped his own heart of his own volition so that the poison wouldn’t kill him quickly, due to which he couldn’t reach 200 beats per minute, plus he didn’t live with someone who got that mark .