...There's blood on them.

Pardon?

Sometimes, when I go back on a whim...

I see blood on her fists.

There's no way she's been hitting the same spot. For an Oni to be unable to break even rocks, it's pretty sad, isn't it?

That barrier was constructed that way, after all. Otherwise, there would be no meaning to it.

However, that is why I must ask you.