There was an icy darkness. A dripping, icy, infectious darkness.
The energy of the Barrier pulsed around them. It distorted the world, making it seem endless in all directions. They had to be careful, because it was just an illusion and the walls of the cave were still there somewhere.
But Frisk and Flowey had been in this room so many times. They had it mapped to the tiniest rock.
They can't make mistakes. This has to be it.
Frisk had no hope for surviving, only winning. Only for them.
The Demon oozed around them. It would never be truly physical without a host, but it could only act outside the Barrier, and was forced to make do.
It was good for them. Frisk and Flowey had worked hard to free its previous host, to get the Demon like this.
Like this, where they could hurt it. Destroy it.
Frisks tiny body popped and smoked. Her hair was singed and clothes dusty. Determination crackled painfully around her, and borrowed magic simmered in her eyes.
Flowey's vines arched through the ground around him. Six souls hovered around his petals and his face twisted cruelly as the Demon drew closer.
This was it.
The Demon will be destroyed.
Or Frisk, and everyone she loved, will be.