Board Thread:Theories and Speculation/@comment-5407586-20150624095943/@comment-732150-20150626192127

Omojuze wrote: You think about this too hard. Steel Release isn't canon, as far as we're aware. Also, there's Crystal Release, which was also revealed to contain Earth Release, which doesn't match up too.

Omnibender wrote: I think the novel called Steel Release a kekkei genkai, not a kekkei tota. Yup.

Speculated to contain Earth Release, on the same shaky "combined nature is weak to the nature that bests one of its components" rationale used to say Explosion Release has earth in it. And those novels are more canon than the anime, if I'm not mistaken.