Exception

He took a deep breath and cast a spell, "Ancoris Vinculum."

Golden light flickered to life in his palm, growing into a swirling, radiant glow. It spread out across the ground, wrapping around the stone floors like a wave of light, extending about twenty meters before fading back into nothingness.

After the light vanished, the atmosphere shifted—a localized settled within a limited space around him, holding him in place.

He tested his footing, stepping forward. The gravity field followed him, keeping him grounded. Though small in range, it was enough to counter the disorienting nature of the void.

It was a simple and effective solution. 

This only made him appreciate how innovative Index was even more. She had managed to sustain a similar spell throughout the entire house .