Bluetiful

Lee Jae-ha has lived his entire life avoiding fights. With no particular dreams or talents, Jae-ha suddenly realizes he possesses an incredible natural talent for martial arts. Thinking, 'What's the use of being good at fighting...', he shows no interest despite his friend Lim Myung-in's persistent encouragement to try mixed martial arts. Without Jae-ha knowing, Myung-in secretly applies him to 'Never Back Down', a reality program that searches for hidden rough diamonds in martial arts... Original Novel: Naver Series, Munpia Original Webtoon: Naver Webtoon, Naver Series

Shin Chi-beom is a talentless amateur mixed martial artist. After disappearing for a week, he suddenly shows up for his next fight, suffering from extreme anxiety, and steps into the cage and kills his opponent, leaving everyone wondering why he's changed. A week ago, he fell asleep and woke up in ancient Greece, where he was a combat slave in the Pankration, a murderous martial arts competition. Five years of life-and-death duels, dozens of times a day, in countless battles, have passed... After the final battle, he is returned to his original body. Shin Chi Bum is left with severe trauma and a mental illness. The only place he can find peace of mind is in an octagonal iron cage. The only place he can find peace of mind is in a cold, octagonal iron cage. He continues to search for the strongest... Will he ever find rest at the end of the fight?