Definitivamente al inicio es lento pero luego hay acción. No es k-drama para un público general, por las expectativas que genera el titulo, aunque ya en la segunda parte si hay mayor desenvolvimiento en la trama.
It is definitely slow at the beginning but then there is action. It is not k-drama for a general audience, because of the expectations generated by the title, although in the second part there is more development in the plot.
I wished they could really go more and the ending is quite an open-ending one. But i like han soo hee there