Board Thread:Naruto: The Last Discussion/@comment-12509038-20141206031744/@comment-945885-20141206072754

Seelentau wrote: Alright, thanks for that. Could you take a look at the next two pages, too? I'm trying to figure out what it's saying about the Tenseigan, but I'm not completely sure I get it.

As I understand it, the Tenseigan isn't a like a kekkei genkai or evolved byakugan or anything, but rather a way to channel all the power that was accumulated and sealed away by the Otsutsuki Clan for a over a millenium.

here's a large sphere in a chamber in Toneri's floating castle that holds the power -- I'm not sure if it's saying they literally sealed their eyes within it, or just their power.

At any rate, the "Tenseigan" is basically Toneri using Hanabi's byakugan to channel a thousand years worth of stored up Otsutsuki chakra into his body.