A deaf and dumb prince wants to become the best king there is after his father, the strongest (muscle-wise) being on earth, perishes. That much is interesting.

He makes some unlikely friends along the way and the dark past of those close to him is unraveled. Also quite titillating.
The problem, however, is it makes no sense. People who hate each other actually love each other, people who want to kill each other suddenly save each other, people who swear allegiance betray those they swear allegiance to and are forgiven within the same scene, ...

It's just one of those storylines you can't keep track of and would need to rewatch with a notebook to understand. Humans aren't simple, that's fine, but not everybody's a toddler, always making emotional decisions and getting away with it.

It's intriguing, but I lost the plot and my will to finish the series.