Board Thread:Naruto: The Last Discussion/@comment-25824723-20141207101850/@comment-25551597-20141216042033

Well so far this is what I understand, but I could be wrong.

all nine tailed beasts (jubi) chakra mode =!= The senjutsu chakra (the senjutsu body that Naruto inherited from Rikudo Senin)

The nine tailed beasts (jubi) chakra mode is:  The mixed chakra  of  all the 9 tailed beasts. This mode includes 10 TSB  and  the user gains the capability to fly. Madara, Obito and Naruto have used this form. With the difference that Naruto adds his senjutsu charka to increase the power of all his abilities. So this form is independent from senjutsu or  the power that Hagoromo gave to Naruto.

The weakness of this form is that if the user rans out or loses the charka of a single tailed beast then this chakra mode can't be maintained or achieved. Naruto unlike Madara only had a very small fraction of the chakra of all tailed beats and half of Kurama's chakra. So since only Kurama is actually sealed on his body  it is very likely that the rest of all other tailed beasts chakra that he got was a limited source. Even if Naruto runs out  of 9 tails chakra mode, this doesn't suppose a real problem  since Kurama lives inside him, he only needs to wait  for Kurama to recover or gather again all his charka and  Naruto can be replenished once more. However on the other hand the chakra of the other tailed beasts can't be replenished once it is exhausted because the beasts don't actually live inside him.

All this leads me to think that during his battle against Sasuke, Naruto exhausted all the chakra he had left from the tailed beasts. Even Sasuke noted that the 9 tailed beasts chakra was running out of Naruto's body. So it wouldn't be far fetched to believe that after their final attack (indra's arrow vs bijuu's rasen shurikens) Naruto lost the 9 tailed beats chakra and with it the possibility to enter the chakra mode with all fancy stuff like the TSBs.

BUT it doesn't mean he lost the power that Hagoromo gave him. Which is the senjutsu body. Maybe Naruto just needs to ask again the tailed beats for some chakra and he would recover the chakra mode with the orbs and all shit. However he now has Full Kurama mode. Probably 100% Kurama by himself could solo all other tailed beast. I would even say that  probably 50% Kurama > the small fraction of chakra that Naruto got from all other tailed beast. So having 100% Kurama +  chakra from all tailed beasts would be too op in my opinion. Hell if Naruto was able to defeat  Sasuke with 50% Kurama, I can't think of how powerful he would be with 100% Kurama. He would be like 2 times stronger than when he fought Kaguya.