Board Thread:Theories and Speculation/@comment-45444155-20200507075527/@comment-6769189-20200517112752

ReweR 1331 wrote:

For what reason are TSB vulnerable to senjutsu if they do not carry natural energy? TSB are not vulnerable to Senjutsu they just cant nullify senjutsu

As for why Senjutsu cant be nullified, no answer was ever given. It just cant. The manga hasnt directly stated that they have natural energy even when breaking it down in depth. The databook on doesnt classify TSB as senjutsu on 2 occasions and doesnt say it has nature energy in them either explanation.