Board Thread:Questions and answers/@comment-27279375-20161007014021/@comment-5028662-20161007191113

Well, I assumed that the glowing energy sword that Terumi uses as Susano'o was the Hihiirokane. Thus, as Ragna punched Terumi out of the unit, the sword returned to its "original" appearance.. Just my observation, anyway. It would explain why it was there when Terumi was pulled out.