Natural ego

"E-Eon...?" her eyes were wide open as she looked at the simple diary. It genuinely was just a simple diary and both our eyes told us that. So, this sudden voice in our heads didn't make any sense to her.

But I knew exactly what this sudden voice in our heads from a normal-looking book was...

"It's a natural ego. Something born from a normal, but very personal thing belonging to a strong person.

Just like how a skilled craftsman makes artifacts that sometimes had a personality of their own, an important thing belonging to a strong as well as a significant person sometimes gains a special ego.

This one's the same... this pleasant voice must be something it gained from the one this diary belonged to... fascinating..."

My voice was filled with great curiosity and when she heard it, she knew it was some of the rare things I found too interesting. And the voice from the book was the same too.