The Second Brain in Hermione's hand was a failed prototype of the second-generation model Roger had been developing after completing the first-generation model he was currently using.
Calling it a failed product did not mean its functions were weak. Its failure was purely because Roger had discovered a problem with his research direction, so it had been shelved.
Just like the magical brain modification from before.
It was not that it could not work; Roger simply had a better option.
"Is this... enough?"
Following Roger's instructions, Hermione slightly pulled open the collar of her wizarding robe, then placed the spherical object against the point where her collarbone met her sternum, pressing it snugly against her skin.
The faintly cool touch made her skin tense.
"Yes, just like that." As he spoke, Roger took out his wand and lightly tapped it.
In an instant, the pearl-like sphere seemed to turn into an illusion. Half of it sank beneath her skin, while the other half remained exposed. It looked a little like... Ultraman's colored energy timer?
Second Brain—Activating
An ethereal voice suddenly rang out in Hermione's mind.
"During the Second Brain's activation process, it will use magic to reconstruct your body's internal structure."
"Having learned from what happened with Harry and me, I built in a spell that affects pain perception. That way, you should not feel too much pain during the process."
"Moreover, this reconstruction is purely a magical overlay effect, similar to Transfiguration. It does not involve any fundamental changes. Once you remove the Second Brain and the magic is dispelled, your body will return to normal. So there is no need to worry about your current discomfort."
"...But I still feel awful." Hermione's face gradually turned pale, though not from pain, but dizziness.
At that moment, she felt as