Isekai, Regression, Transmigration, Time Travel

Due to a sudden natural disaster, Park Byung-jun, a Korean-American lobbyist, finds himself reincarnated as Yi Kang, the second son of Emperor Gojong of the Korean Empire, at the moment of his death. Armed with his knowledge of the original history,

New Chronicles of Goguryeo In a world unfolding within my dreams, It was the late Goguryeo period, And I became Yeon Namsaeng, son of Yeon Gaesomun. In reality, I am Kim Namsaeng