Collapsing Castle

*Why is the castle collapsing?*

A massive earthquake began.

Dust billowed from the castle, and I couldn't shake the feeling that it was sinking.

It didn't take long to realize that, just as Rabia had said, the castle was indeed going down.

But why was a perfectly fine castle suddenly collapsing?

*Is it even possible for this castle to collapse?*

It was something that hadn't happened in the original story, so I was a bit flustered.

This was a castle that had remained intact even after the Hero and the Four Heavenly Kings fought fiercely, turning the area into a wasteland, wasn't it?

For such a castle to collapse was hard to believe, yet...

<F1>Rumble, rumble, rumble!</F1>...