Tartarus

So he can see what Naruto does with Sakura in bedroom

Didn't Kurama like to talk about Naruto relationship with a girl (kissing) ? 

he seems to enjoy reminding Naruto of his moment with the sauce  

do u guys think the tailed beasts could die of old age? i mean they were like babies at one point weren't they? lol.. xD

their like masses of chakra right? xD

so i doubt it, maybe their bodies reflect their state of mind, would explain why they were all babeis when first born xD

That was just the beginning.Just a warming up.

Plenty of "Naruto-kun" ing done that night 

lol I wouldnt be surprised if Sasuke used the excuse of "I'd be the better Hokage so i should kill Naruto to steal the title" knowing his history.