Park Bo-young was very popular early 2010's after A Werewolf Boy.
She has been a solid actress for a while now but you're right, she just isn't the best at picking projects.
I always find a question like this difficult as being underrated to international fans is different to being underrated in South Korea which I'd measure by accolades.
omg completely forgot this movie existed lmao. I stopped it very early the style was just too much for me.