It's a great adaptation but the manhwa did better with depth of the characters. The integration of the story in this movie making background is a good choice and it doesn't make the story any less interesting than the manhwa.

The protagonists have a great chemistry but for me they didn't really developed Da Un's character.
This story deserved a longer format (with more episodes or longer episodes or both).

I was expecting more but overall that was a great webserie, a great BL and a good entertainment.