Just listen to Serena laughing and saying:

"Legendary Anti-Devil Armed Forces."

"Black coffin in the dark night."

Thales was startled and looked at the black coffin under his butt.

This coffin - the coffin that I once climbed into.

It's actually...

The only weapon that can deal with the magician?

Legendary anti-demon force?

But Serena wasn't done yet.

Staring at Katerina's murderous gaze, she breathed out word by word:

"Inside, in those seemingly seamless dark black stone slabs, there is a person being imprisoned..."

"Thousands of years ago..."

Thales's pupils began to shrink and his breathing accelerated.

Until Serena uttered the last words:
Chapter completed!