Yumi

Same as Kill boksoon it's a very entertaining action movie but also same as it, the story is the weakest part of it.

I believe you have to watch the first part to fully understand the plot and the characters as some from the previous one are mentioned here and mantis himself was hinted at in the first one so to get the whole picture, watch the first movie before this one~

Now the story is all over the place because it's not very consistent, and generally not that interesting, the characters are just too humbled considering they are killers, sometimes they show them as emotional and sometimes devoid of any feelings Mantis himself was a bit obnoxious to some extent so no interesting characters, and no well-written story, this is only saved by good action sequences, aside from that I wouldn't recommend this at all ~