Lie Zui Tu Jian (2022)

If you like crime dramas, watch this. It's a surprisingly beautiful show, with great acting and stories, and the different art they show throughout the series is wonderful. Honestly, this show had me from the opening credits and did not disappoint from then on. No romance, some bromance.

Both are related to crime/justice with a focus on female victims and stories. There is also an element of revenge, or at least a long standing grudge/case in Under the Skin

Both are detective style drama. One to find out the death of his mother while the other to solve the mystery of the death of his master. Both also deal with forensic doctors and police .

Both have crime, action and two male leads and no female lead.
Both guys in under the skin are detectives.
Both guys are there for one another in under the skin too.
Not a lot of bromance in under the skin as compared to Killer and healer but still, good enough and the plot is good too.

Both friendship dramas
Both detective dramas
Both have the male lead with a traumatic past
Both have grave crimes