I know that naruto movie are not part of the main story but how do you think

[EdoDarkLighting]

That box moster(from blood prison movie) came to be

 

[AllomnisymbolsparttwoT]

idk, It is said to been around the time of rikudo sennin

 

[EternalFlame]

The box monster. _@:

 

[Magatsu Izanagi]

I barely remember it I think it was around since the beginning of time or when the SO6P was alive, something like that.