Reversed Casting, the Undetectable Shrinking Charm!

Irina asked, "Then, Professor, have you figured anything out?"

Newt chuckled. "I have some ideas, but I didn't bring you here to teach you. I intend to have you participate in this project so we can pool our wisdom. Before I explain my own thoughts, I'd like to hear yours first."

At that, Irina furrowed her brow and lowered her head in thought.

Anchoring a spatial coordinate and allowing it to change as its carrier moved meant that the spatial coordinate anchored by that point had to be movable in itself.

Only something movable could retain its original mobility after being anchored by some kind of force.

However, the Power of Space was an ethereal, formless, immaterial force.

Even magic power, which was likewise formless and immaterial, could become a force with form but no substance when cast as a spell. When a Demon King level wizard compressed it to a certain degree, magic power could even become something with both form and substance.

But what about the Power of Space? The only proof of its existence was the white light that lit up when wizards used methods of spatial travel such as Apparition or Portkeys.

To make an anchored spatial coordinate movable, the only way was to forcibly compress the space containing that coordinate until it possessed a certain amount of mass.

Once a spatial coordinate had mass, it could be moved by external force.

Then what method could compress space to such an extent?

Irina subconsciously thought of the Undetectable Extension Charm. Since it could expand a space without limit, what if she cast the Undetectable Extension Charm in reverse? Could it achieve the effect of compressing space?

With that thought, Irina voiced her doubts to Newt.

After hearing Irina's line of reasoning, Newt could not help but