The greatest martial artist under heaven? No. A legendary hero of a prestigious orthodox sect? No. Yeo Ja-Seo, a timid, run-of-the-mill underling in the martial arts world. Through a series of coincidences, misunderstandings, and serendipitous events, he is reborn as a mysterious martial arts master. The survival story of Yeo Ja-Seo, a master with the heart of an underling. (Source: Naver, translated) **Original Novel:** [Chapters](https://series.naver.com/novel/detail.series?productNo=9412532), [Volumes](https://series.naver.com/novel/detail.series?productNo=9482048) **Original Webtoon:** [Naver Webtoon](https://comic.naver.com/webtoon/list?titleId=850653), [Naver Series](https://series.naver.com/comic/detail.series?productNo=14131519)