Don't be fooled by the opening. This isn't a story about making the country strong, just a story centered on love. The country's rise is only shown in the background. I'm terribly sorry that I lack the skill to write more about it.
A special forces soldier who loves his country and is loyal and steadfast is reborn in 1948, where he meets a hugely talented superstar who values love and loyalty. With love and acceptance, the star builds him a happy, secure shelter, so he won't have to weather hardships and storms, and can freely shine.