for me, the 1st ep is giving, Cir didn't go from one world to another, Cir1 woke up with the memories of Cir2(in love with Phu). meaning that his accident somehow caused a bridge between 2 worlds. could be that in Cir2's world something also might have happened to either one or both of them for this "connection" to occur.
i haven't read to books, this is just what i understood. could be entirely wrong.
overall, its a very interesting and unique premise. hope they can deliver on that basis.
its a confusing premise, but from what i got the photographer gave ryu a last chance to decide whether to go to Korea with him but ryu decided not to. he can either go back to what his life previously was or he can return to gilsu or do something entirely different and this decision is left unanswered.
1 
the mom should be a detective lol
i haven't read to books, this is just what i understood. could be entirely wrong.
overall, its a very interesting and unique premise. hope they can deliver on that basis.
tinaaaaaaaaaaaaaaaaaa
pretty entertaining watch, 8.5/10
CAN NOTTTT FIND IT ANYWHERE