Board Thread:Theories and Speculation/@comment-26107879-20180520052942/@comment-734582-20180520094201

Elveonora wrote: I agree that all users of TSB have SPS, but I think it would be going too far to say all Otsutsuki do. Can Momo and Kin fly? Yes, but so can Onoki, who doesn't have SPS This part is definitely unclear in the series, yes. If Momoshiki and Kinshiki have SPS, then that implies TSB's are not an automatic feature. Even though when Obito obtained some SPS from Madara, he automatically got a new one.

Well, guess that's another reason to want a databook to actually explain all this.