The thing you are looking for will be there.

The dear thing that was once taken from your heart...

Being a human or a youkai is but the surface. Not being interested in knowing someone...

And not trying to look into the depth of their heart...

That creates more darkness in one's heart...

As deception calls out to deception, and malice calls out to malice.

The depths are endlessly dark and cold...

What is it you were searching for there?