In this place, it was like an icy blue ocean, with cold light piercing the seabed like sharp swords. Icebergs drifted on the surface, and Rode could see creatures made of black iron and ice wandering within.

"Those are the Prison Demons," said the Book of Knowledge.

"Special creatures born from the black mist in the Ice Prison, possessing powerful sealing abilities, with an instinct for imprisonment imprinted in their souls. It's said that each iceberg fortress holds a powerful spirit, and the stronger the iceberg fortress, the stronger the spirit imprisoned within."

Rode gazed into the distance, the dreamscape's view was incredibly far-reaching, and within his sight, countless icebergs could be seen.