both movies are indie movies starting with the same main actress, the incredible Kim Hyang Gi , the two movies stories about a teen\ child who has to grown-up faster than her peers and hold responsibilities bigger than her age.
both movies carry the same vibes and sent a strong message about important social issues in the Korean community which could be easily seen in any other community.

similar comedy vibe, both used some decent action scenes
the chemistry between the leads top notch

this is a totally different story from each other.
but the vibes, atmospheres, and cinematography are very similar to each other, also, the main female lead in DYLB had the same shy personality of the main lead in black dog yet unique and refreshing, although they are shy but they stod for what they think it right.
if you like "do you like Bahamas?" I totally recommended you to watch "black dog" .