Possibly because the place he needed to go to get the mask was located in Konoha, and he was a wanted S rank criminal. He may not have been able to successfully do it if too many people were around.
Not only that but because he could only use his body transfer jutsu every three years, he'd have no way of escaping the death god. He did a body transfer into a zetsu which saved his life in this weeks manga.
Possibly because the place he needed to go to get the mask was located in Konoha, and he was a wanted S rank criminal. He may not have been able to successfully do it if too many people were around.
Not only that but because he could only use his body transfer jutsu every three years, he'd have no way of escaping the death god. He did a body transfer into a zetsu which saved his life in this weeks manga.
I believe it the location to use the reverse jutsu death reaper seal could only be done in Naka shrine.He needed sasuke to use the jutsu inorder to remove the sealed stone for them to proceed with plan
seems like he could have gotten them back at any point during the time skip. And he also could have revived the 4 hokages. why didn't he?