Saga about great emperor of Korea.
Gwanggaeto is descendant of Jumong.
The vibe from this two drama are very similar and you can connect when Gwanggaeto talks about history of his Kingdom bcs some of them can be found in drama Jumong.

They shared similar characters and both about time travelling. Samurai Sensei is from the past to the future, and Jin is from the future travelling to the past.