Dangeum and Jigyo (2018)

Blurb:
Our story begins with Jigyo, the crown prince, having recently been exiled from the palace with a guard, Dangeum, and the man who raised him, Chunggeum. The three are forced to pass their remaining days in a quiet village made up of mostly elderly residents. This leads to a listless and lonely Jigyo, who begins pressing Dangeum to relieve his traditional post as a voiceless shadow, and the two quickly grow closer. Hints of a bloody conspiracy, Dangeum’s mysterious origin, and a Chunggeum who seems to know more than he’s letting on – just how are these three characters connected, and what will happen to them during exile?

Source: www.anisearch.com/manga/51117