In this world, there are beings that no one can touch, no matter what. They are perceived as the strongest, and they each have their own strengths.
But there are also several techniques that one can easily use as they get stronger, but they can't without getting the strongest first.
What I mean is simply there are some exclusive skills that are only used by people who are strong or people with related attributes.
Voice transmission is one of those. When you pass the strength to some extent, you can simply bend the raw mana and transmit your own thoughts to another person. It works like killing intent or intent, but thoughts are a lot more complex than intents, so they require a lot more advancements in the path of magic.
This is the reason I was quite surprised by the voice I heard in my head.
[Come inside, I have been waiting for you.]
Of course, it was not only that, but also my strong senses were screaming at me.
"Here you go."