Board Thread:Naruto Discussions/@comment-34436445-20180524144523/@comment-734582-20180612074946

Namikazenaruto9 wrote: I don't think Rinnegan can absorb TSB though, Even absorbing all killing ash bones seems unlikely. Even if ninjutsu component is absorbed the bones should still kill that person. And finally the whole Kekkei Mora theme I am not sure but is there any special info regarding it not being capable of being absorbed? Based on the explanation given, it should be able to absorb the chakra component of the ash bones, yes. The bone would remain. I'd expect that being hit by a bone is infinitely preferable to being hit by an instant-kill bone.

TSB's are unclear, because these things themselves are unclear. They don't seem to obey the normal rules on ninjutsu, since they form without apparent user interference. Not just that, but Naruto used them to make Bijudama Rasenshuriken, yet they returned unharmed afterwards. This implies that there's more to these orbs than merely being a 5-element combo.