So MC is just casually going to let a huge chunk of korea get destroyed and many people eaten, all while he screws around doing nothing, not even sending out his shadow soldiers. And then he decides to screw off to japan to go save another country while his country is being destroyed and people are still being eaten... wth is the author thinking? I really dont think he was thinking at all here because none of this makes any sense and it all could have been dealt with easily. MC says to sister "yeah million of people ae being killed, including other peoples kids, i have to go save them, bye" and then wipe out the monsters and close the gate(it wouldnt have taken him two days) and then go to japan right after and save them. This is just utter trash writing and it came out of nowhere.