Once a Hero

 is a Fantasy Webtoon created by Yankifull; it updates every Monday. The original Korean Webtoon premiered on Naver Series and concluded on August 18, 2021.

Synopsis
''"Had he been a hero in his past life or something...?" "That's right. I once rescued this nation from destruction." When Ja-in is kidnapped due to his family's massive debt, Unjo happens to walk by and save him from his kidnappers. From that day onwards, Ja-in's life is never the same...''