Board Thread:Fourth Databook/@comment-4271790-20141104211032/@comment-945885-20141105074400

Seelentau wrote: FF-Suzaku wrote: They probably corrected Sage Art: Boil Release to just Boil Release because Naruto was using the Tailed Beast's chakra, which has special properties, and thus makes it a Kekkei Genkai, not Senjutsu.

They corrected it? I never heard of SA:BR in the first place. Where did that come from? Oo Sorry, Sage Art: Boil Release Unrivaled Strength was just a fanon name.

It was when Kokuo increased the temperature of Naruto's chakra to to help him Naruto break free of Kaguya's ice trap in #684. There was some debate of whether it was an actual technique, or if Kokuo was just saying "I'll give you unrivaled strength."

Turns out it was a technique, Boil Release: Unrivaled Strength, and it's listed as a Kekkei Genkai.