[quote=@edgeout]
@Branch Is your dude a jinchūriki? The cursed seal, high chakra?
[/quote]

Nah, Cursed Seal is that cursed seal that the main family from the hyuuga gives to the branch family in order to protect their secrets. The cursed seal allows the main family to control the branch family members. The extra chakra is just because of all the training he did while extremely young, though it's not an extraordinary amount of chakra.
More about [url=http://naruto.wikia.com/wiki/Hyūga_Clan] Hyūga Clan[/URL]