I spent some time figuring out how deaths design works myself and heres what I got- I took some time to think about this and if there seems to be anything wrong about the design let me know.
Death/Disaster
#1 #2 #3 #4 #5 #6 #7
say the victims escape the disaster in this order and victim #7 is the main protagonist
#1d #2d
by the 3rd or second person things start to heat up
#3d #4d then victim #6 intervines victim #5 death
#6---#5
then victim #6 intervines in victim #7 death gonig back to victim number #5
#5d
then
#6
and finally
#7 ending the list
Now if you put it this way say victims #6 and #7 live and enter the realm of death agian
just like in FD5
it causes a disaster killing them and finishing the list but in that case another group of victims escape death
just like in FD1 causing another list and repeats the same process agian