Thanks a lot for the new chapters, as I said before I really like this manga!
Saki's nightmare (rescue helicopter, dark masses (everything covered in mud?), agitated seagulls etc.) seems to be connected with the Tohoku earthquake and the tsunami that killed her parents. It must have been an extremely traumatic experience for her. No wonder she can honestly sing the blues.
I wonder if the poles with ribbons were corpse markers? Rescue survivors first, come back and dig out the deceased later?
Maybe we'll get an explanation next chapter.