I really really liked this poster. The lack of color actually gave this poster an eerie look. Especially shin sung roks face. He looks diabolical and evil. Just what this poster needed.

There's a lack of depth, which can be easily fixed if you add shadows or something similar :D typically, the title should have different style than the rest of the text because it is the *title* and it should stand out, right (though the motion blur is a nice touch)? And I do agree about the coloring, especially on the characters. Try to match their contrasts :)

Can I ask you something? You know the word 'running'? How did you make it like a little motion type? .-.

it's great! a sprinkle of coloring and font choosing could be great :3
and i think you can blend much better!
this is great already though ^^ <3

Woah your skill is getting better and better, I like so eun's expression the most! :D

i think it's nice, just need more coloring tho!

Woah~ daebak, chincha!