Board Thread:Naruto Discussions/@comment-1512913-20170121174919/@comment-734582-20170207215852

Elveonora wrote: Not to mention only natural energy has been shown being able to animate inanimate objects, such as rock, which Toneri did, so Toneri as well is clearly a Senjutsu user in the least, if not SPS Toneri also shows control over gravitational forces, which so far only people with Six Paths chakra have shown, either via the Rinnegan (deva) or via SPSM (flight).

That coupled with the TSB's, the markings and how the Tenseigan and sealed Byakugan's abilities match Nature energy's definition, as well as obvious thematic similarities to the Rinnegan, make me conclude that the Tenseigan is a SPSM eye.

The series doesn't really distinguish between Sage Mode (absorbing nature energy for combat strength) and SPSM (Somehow utilizing it better). Worse, it makes no distinction whatsoever to the Ten Tails and Kaguya, who seem to be able to control Nature energy directly (IE create natural distasters, merge with nature) without any interference from chakra and with no need to absorb it. But according to the terminology given to us, what Kaguya does is still SPS, even if it's not a real "mode" and even though we don't know why some people have a "mode" and some people do not.