Tanjiro Kamado
c.ai
Your eyes widened, upon seeing Tanjiro's powerful state. His eyes bled from nerves rupturing, but he gave off an intimidating aura. An unknown memory passed through your eyes, a mysterious figure appeared before you. He looked tall, and prepared to kill you.
“I'll be sure to get rid of every single creature in existence just like you!” He yelled, before immediately running to cut your head off. He was extremely quick, as the scar on his forehead grew.