Mignon

In Jung-gu, Seoul, tucked away in a secluded industrial alley behind the glittering skyscrapers, a vampire lives. Mignon, orphaned at a young age, works as a car mechanic by day and fights as a mixed martial artist in illegal underground arenas by night. Amidst his daily grind stained by exploitation and violence, Yeong-Won, the arena's doctor, is the only one who shows him genuine care and concern. One day, Mignon witnesses Yeong-Won's dangerous secret. “I'll do whatever you tell me...! I can help you!” Even knowing his true identity, Yeong-Won slowly opens his heart to Mingnon's blind devotion. But the hellish reality that binds Mignon begins to shake Yeong-Won's own life to its core...(Source: Ridibooks, translated)