Hashirama's Healing without Seals

[HyuugaHeir]

Ok I gotta re-word what I said, what I meant is that her appearance is not real, it's just a facade to make people believe she's still young.

By definition the Yin seal is used as an illusion, I'm not saying it's an actual genjutsu lol. But the fact that it's meant to fool people like a genjutsu is why she would call it "yin seal", because genjutsu is in every way a Yin technique. It's like her way of acknowledging the fact her seal is used to give her a false appearance, tricking people like genjutsu.

Yes, facade works. I get it now. And I acknowledge your point. But then again, I see a flaw in that.
Byakugou utilises cell division, a physical trait.
You're saying she named it Yin seal bec "it gives her false appearance, tricking people like genjutsu does." Tsunade is a ninja, not a conman. If I have the Byakugou, I wouldn't name it Yin seal just because it tricks people. I would name it Yin seal bec that is how I obtain it, through harnessing my spiritual energy. DOn't you agree that such is a more probable history for Yin Seal?