Board Thread:Theories and Speculation/@comment-26479810-20191214162345/@comment-9782468-20191218161645

@Flatzone

No matter how much you refine a technique, your actual chakra limits will limit you.

For example, with 100% efficiency, Raikiri used to its fullest extent will take about 1/6 of Kakashi's chakra (give or take, and this is just an example, not saying it's the actual number). So even if he uses his chakra 100% efficiently, he's limited to 6 uses. Now Kakashi's limit has grown from Part 1 to Part 2, that's true. His limit went from 4 to well over 6.

But a 33+% increase is a far cry from Sasuke, who's reserves would now have to be well over half of Naruto's War arc chakra that included SPSM and half of Kurama.

And we know that because Obito is a master of Kamui. He's spent years using it and he's also powered up by SP power. So when him and Sakura are opening portals, he's doing it with extreme effiency because he knows how to.

Sasuke can travel through dimensions and still have enough to 1v1 Kinshiki for awhile. He even has enough to open a portal and let several Kage through and still have enough to fight alongside Naruto.

So Sasuke has to have more chakra than SP Power Obito and half of SPSM War Arc Naruto combined. In fact, considering Obito's difficulty in opening the portals and Sasuke's use of them being so easy in comparison, I'd say he'd need at least double Obito and Sakura's combined chakra, with Sakura using her collected chakra of 3 years.

Essentially, Adult Sasuke needs more chakra than War Arc SPSM Naruto to justify his feats in portals. Obito was operating extremely efficiently given his mastery of Kamui, so even taking into account Sasuke's growth and mastery of the portal technique, Sasuke needs way more chakra.

Therefore, it doesn't make sense to have Sasuke grow from pre-Hagoromo levels of chakra to well past Naruto post-Hagoromo levels of chakra, without keeping the chakra from Hagoromo.