Kaguya Jutsu/Nue

[Star Child]

In the recent Boruto episode Sasuke says that Danzo came close to replicating Kaguya's jutsu. What specific jutsu is he talking about?

 

[lndra]

I think the Nue portal thing

 

[Star Child]

I meant what jutsu of kaguya's does the Nue portal correspond to? Is it her ability to change dimension at will?