Yoo Soo-Ha

Yoo Soo-Ha (유수하), known in the future as the Flame Emperor, was the first Korean to reach World Rank 1 and a legendary hunter—the only person to clear the Tower's 40th floor. Wielding fire and a flame spear, he was publicly adored, but privately an arrogant, foul-mouthed psychopath willing to kill anyone who threatened him or learned his secrets.

His secret was the EX-rank skill "Returner's Clockwork Watch," which let him rewind 24 hours upon death. When the Saintess he was rumored to be dating plotted to poison him, he killed her—and murdered the F-rank Kim Gong-ja, who happened to witness it. That killing activated Gong-ja's own copy skill and set the entire story in motion.

After Kim Gong-ja regresses eleven years into the past, Yoo Soo-Ha is once again just an average F-rank hunter grinding slimes on the second floor. When he tries to rob and kill the blood-soaked Gong-ja over a potion, Gong-ja kills him first—finally completing the revenge he crossed time to achieve.