First Impression:  5/10
Not good or bad, pretty much average, honestly I think the colour 
you've chosen is too much for me as literally the first
thing that catches my eye is the colour, it's practically everything.
However it's also quite elegant.

Theme/Genre: 11/20
At first glance, it's easy to interpret that it's somewhat romantic, but comedy?
Honestly not so much. The characters putted in the middle are a
good placement for a romcom. It doesn't suit the 'cute' genre,
there aren't really any bright, vibrant colour sitting around, everything
is pretty much pink. 

Character Placement: 5/10
Daehyun and Hyuna pngs placed in the middle, are simple, but
straightforward, it's nice to look at it. However the two pictures you've
putted in the top corners, seem somewhat unnecessary, and
it seems it's out of place. I think it'll be better off if you erase/delete
them from the poster.

Typography: 9/10
Ok, love your font choice, it's really suitable, and the way you've place
the title in three lines is perfect. However I think the position of the title
should be change, probably just shift it a little o the bottom. It's quite nice that there
is a gradient added to the title, but there is too much pink going around.