what would hapen ....

[Prabhoo]

what would happen if you wear a mask other than the right shingami mask ???

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there like 20 other masks ...

 

[Rohan]

Then you wouldn't be able to summon the Shinigami, I guess

 

[uchihamad]

It may have different abilities

 

[Everztar]

Uzumaki Clan are the masters of Fuinjutsu... the masks might be there to improve the power of their sealing techniques / reverse their sealing techniques

One mask for each jutsu?

 

[Allsymbolsparttwo]

there is more than one shikigami/shinigami in japanese mythologies, each mask must represent the many gamis that exist in the world of the naruto

 

[409fusion]

who the **** knows!!!
Maybe something else would happen.