Possible reason why minato and hiruzen CANNOT use RDS anymore

[bigfatloser]

I don't feel like getting scans but basically:
-There are a bunch of reaper demons, one for each mask
-Minato and Hiruzen only knew the seals to summon the one we saw in the manga
-Oro cut open the belly of that reaper demon
-If that reaper demon were to be called again, the soul would not stay within the demon anymore
-Both the user of the techniques' soul and the targets' soul would fly back into their bodies like after pain revived everyone.

This is a possible theory as to why this technique would not work anymore.

 

[RNITBmsage]

you do realize kishi will never explain the rds to us

 

[bigfatloser]

you do realize kishi will never explain the rds to us

kishi has an entire chapter planned out to explain the mechanics of RDS when hiruzen foolishly tries to use it against madara.

 

[Gorlack2231]

It's a certain Shinigami for the Reaper Death Seal. That one had a mask hidden in the uzumaki Clan's Noh theater.

 

[Tobiramas]

There were 27masks in the Uzumaki temple which i think represent the 27shinigamis that can be summoned by the reaper death seal. Also, Orochimaru was the one whose stomach was cut, so i don't think the shinigami's belly is actually cut in half. While doing so, Orochimaru was the substitute or sacrifice

 

[Fodder#4]

kishi has an entire chapter planned out to explain the mechanics of RDS when hiruzen solo's Edo Madara and Madara tries to use it against Hiruzen.

Fixed it for you!

OT: That's a good reason for why it may not work again, but Kishi probably won't reveal any exact reason or just give us two panels of Hiruzen saying the jutsu is now useless.

 

[grizzlyshree]

I don't feel like getting scans but basically:
-There are a bunch of reaper demons, one for each mask
-Minato and Hiruzen only knew the seals to summon the one we saw in the manga
-Oro cut open the belly of that reaper demon
-If that reaper demon were to be called again, the soul would not stay within the demon anymore
-Both the user of the techniques' soul and the targets' soul would fly back into their bodies like after pain revived everyone.

This is a possible theory as to why this technique would not work anymore.

its a shinigami dude. it wont release the soul. what Orochimaru did was probably to call the particular shinigami and place the DNA of four hokages and make it release them. it means the source of the Dna(four hokages in this context) are only released. the other people sealed by the particular shinigami cannot be released as u dont have their DNA.

 

[yondaime4]

Or because they are no longer living souls. but your theory is cool too