Red mansion?

That's right.

Apparently, something called a "vampire" lives there.

So... You think she is suspicious?

I guess it's 5 or 6 years ago... A certain treaty was entered into for the sake of preserving the balance of this world... But for the vampire, it was something that binds her.

The treaty was half forced upon her.

So that led to this incident, huh...... Why now, after all this time?