What the hell.. is this alien story or just bullshit story about mad idiot...
when part 1 they alredy killed so many kids without even giving them wepons.. and there r dumb parts like when they grab that key with hand like that, even so there haf story and it is actually cool.. even i am not cried or scared i loved that story.. and this is the first ever drama thay i waited without patience for 2nd part.. but what the hell, only 1st episode aliens arrived then only few, then here comes prisonrs and then tht idiot go crazy...

Is writer go crazy or did he forget about story line. Why the hell they all should die.. its actully ok if they died becoz of aliens.. but no hell.............. worst ending ever.. this is not humans fight this is aliens story..

And 2nd part, story line is suck i think it would be more better if they end it in ep 6. There r no news about parent and there r still balls left and theire only kimchi write exm hell dude hell... and when some scenes come to end it is not ending cool way becoz next part started from other different sscene. Is writer drunk...??? i am so angry right now ??

As for actors no need to argue they are best every character did thire part superbly except writer ?

And most funny part is i waited somthing happend and at last moment of lee n then he will come back... that what i hope but look at what we got not only lee but also won bin disappeared and all kids just dead.. poor us

(I write this again (edited riview) this part after thinking - When I was wondering why this happened to a story that had so many ratings, what I thought was that we were watching the story in the wrong corner.... We watched this with expecting a feeling like All of us are dead, but that's when we thought that we missed one of the most important points of the story. We watched the story based on the alien spheres. But the kids in story were not thinking it that way. For those children, whether they have the spheres or not, it doesn't matter to them whether the world is destroyed or not. Wanted to face the exam called CSAT. Those children went to military service because of CSAT, when their friends died one by one, when their parents didn't know whether they were alive or not, even when the lieutenant who was their bodyguard died, but those children did not want to leave this mission because of CSAT, if you look closely, all of them died at the last moment. That also becoz of CSAT That's why.... If you look at the story on the basis of CSAT, thinking that the spheres is actually a just in your mind , the the beginning, middle, and end are balanced....

In my opinion, the main purpose of the story is to tell how badly a competitive exam affects a child's mind... Even if it is not scary things like duty after school, even when we are doing competitive exams, when the exam is near, the books of the class top are lost. They have been working as if the admission is disappearing. As far as I know, such things are still happening today... If you look at it like that, there is a similarity between going after the competitive exams by trampling even the closest friend and the things that happened in Duty after school....

But overall i dont agree with writer becoz this is survival drama about aliens. Itz not survival drama about school kidsor somthing