Side Story 'Tholl, Lukie, and the "Sacred Kendama"'

"What are you fretting over, Tholl?"

One afternoon.

Lukie came to see me while I was looking over some documents in my room.

"It looks like you're staring at an old, worn-out piece of paper... Hmm? Could that paper be...?"

"Yes. It's a piece of paper found in the secret room of the Demon Lord from two generations ago."

A few days earlier, a secret room belonging to the Demon Lord from two generations ago had been discovered in the Raisenga territory.

This paper had been inside it.

It was the cover of a book from the hero world.

The preservation was poor, and some of the writing had faded away.

On top of that, the book itself was gone. Only the cover remained...