Inuyasha, Myoga and others in “Unfinished Business”

Inuyasha

So, Sango, how do we get rid of this stupid cave barrier, anyway?

We need to know what incantation you villagers chant in order to break it.

Sango

There isn't any incantation.

Of course there is! How else would you do it!?

Sango

At first, my villagers thought the demons' had placed a curse on the entrance. But we eventually realized that she is the one who keeps intruders out.

Miroku

And who is "she"?

Sango

The person whom the Sacred Jewel was born. Her spirit is full of sadness and regret, and it prevents others from entering. That's what I sense. It will be easier to understand once we go in. Go ahead, step through the barrier.

Inuyasha

Uh, are you sure about this?

Sango

Countless people have been killed because of the Sacred Jewel's dark power. And it is the sympathy you show for the victims that leads me to believe she will allow you to enter the cave.