Burned with fire, it would not burn. Soaked in water, it would not rot.
The counterfeit trick of recognizing an owner through blood was an even bigger joke.
No matter what they did, the notebook was impervious to fire and water, immune to blades and bullets. They could not even dye it.
After all that effort, Harry and the others were growing frustrated and helpless.
"Professor Kate, how exactly was this notebook made?"
Harry gave up and had no choice but to look to Katelyle for help.
Only then did Hermione Granger and Ron Weasley come to their senses. They had spent so long messing with it and wasted so much time when they could have simply asked Professor Kate for help.
Katelyle had watched the three of them go at Tom Riddle's notebook with all their might without offering any help, finding it rather amusing.
At the same time, he could not help but admit that Voldemort really had a knack for certain things.
"Harry, pick up your pen and write in it," Katelyle said to Harry. "Write, 'Hello, Tom Riddle.'"
Harry was puzzled, but he still picked up his pen, found a blank page, and began writing.
Very quickly, the three of them discovered that the words Harry had written vanished.
As Harry and the others continued to stare in surprise, a line of words appeared on the blank page.
"Hello!"
The three of them were utterly shocked. Harry even cried out, "How is that possible?"
Katelyle smiled faintly. "Nothing is impossible, because this is Tom Riddle—a man who made the wizarding world fear him for decades."
Harry and the others fell silent for a moment, each lost in their own thoughts.
"Merlin's beard, I know who he is," Hermione Granger suddenly said in shock.
"Who?" Ron Weasley