Disappearing children... whilst the apparent need to hide behind the karakasa had abated, Akari had yet to move from the spot, and was trying to remember what advice was given to children just in case there was something spelled out in such common advice they all ought to know and help with. Unfortunately, now that it came down to it... the only such advice that she remembered being given was "If anybody does something weird, break both of their legs and come home". That... probably wasn't the case here and no doubt wouldn't have worked on some kind of disappearing ghostly figure anyway...