Mujang follows Kwon, an orphan boy who becomes tangled up in conspiracies and coup d'etats on the path to revenge for the death of his older brother. Kwon shows excellent martial arts skills that can best every opponent he comes across, which eventually catches the attention of the military.
The story itself has several major time skips, varying between when he is a teenager to well into adulthood. The skips can be quite abrupt, but help to move the story along.
Overall, I'm giving this a 9/10 based on likeable characters, great storyline, and pretty remarkable fight scenes. Still trying to sort out my feelings about the ending, as it seems a bit inconclusive and obscure.