"Yes, you guessed right."
The Doctor confirmed Shade's guess again:
"Different hunter academies had different training methods and specialties, and Demon Hunter's Notes were the core tomes of every academy, recording the academy's abilities, inheritance, history, potion and alchemy formulas, secret phrases, and other secrets.
Over the changes of epochs, these notes had become Sage Level Relics. But their value was even greater than Angel Level Relics; the knowledge within rivaled a large library—the drawback was that opening one would make you a Demon Hunter, and destiny would arrange for you to fight demons for the rest of your life."
The Doctor gave his final summary:
"It had great benefits and great drawbacks, but it could ultimately be seen as a symbol of the Third Epoch, the final echo of that strange era. The Demon Hunter who sacrificed himself in Gregory Village a century ago was probably the last member of some ancient academy."
He regretted the noble hunter's fate. Shade tapped the tabletop with a finger and raised another idea:
"Doctor, since we can't find thirteen Demon Hunting Seals, could we use that book as a substitute?"
"This..."
The Doctor hesitated. He had recently been studying the ritual to obtain a Demon Core Ling Rune, so he understood immediately after considering it:
"Theoretically, it should work. The book's power itself isn't important; what matters is that opening it would allow me to obtain a Demon Hunter's true power. Under normal circumstances, that power would directly attack my soul. Even if I didn't die, I would certainly lose control completely.
But if I did it during this ritual, there was a possibility that the hunter's power and the demon's power could reach a balance. And if I did that, I wouldn't need to fuse the relic into my body. The