My Country: The New Age (2019)- Dramacool

Set during the end of the Goryeo period to the early Joseon period. Two friends aim their swords against one another due to differences in opinion about “my country.”
Seo Hwi is a warrior. His father Seo Geom is a famous commander. Seo Hwi does not compromise when it comes to injustice. His life devolves into a hellish existence, but he still holds a smile.
Nam Sun Ho is smart and a talented figure. Because his mother was born into the lowest class, Nam Sun Ho is looked down upon by other people. He wants to pass the military service examination. Due to a corruption scandal involving his father, Nam Sun Ho loses his dream. Making things worse, he comes into conflict with Seo Hwi over a misunderstanding.

(Source: AsianWiki)

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