"What's wrong, Horace?" Dumbledore asked, noticing the unusual expression on Professor Slughorn's face.
"I don't know if it's just my imagination..." Professor Slughorn looked at Harry strangely. "Harry's Confundus Charm feels very much like that man's..."
"Ah, that's hardly surprising." Dumbledore smiled and shook his head.
"As I told you before, because of certain unusual circumstances that night, a Soul Fragment of Voldemort remained in Harry's soul world. So it is perfectly normal for Harry to be influenced by him and become somewhat like him.
"That is also why Harry can speak Parseltongue. But speaking of which..." Dumbledore turned to Harry.
"Harry, do you still have no plans to deal with that Soul Fragment of Voldemort's? Personally, I think you are now fully capable of resolving it. You are rather different from Nagini in that respect.
"Her soul is not strong enough, and she is a Horcrux in the fullest sense. It should be much easier for you than for her."
"Well, Professor, I'd like to wait a little longer. I want to be a bit more certain," Harry said.
That was not quite the truth, but neither was it entirely a lie.
Harry did indeed want to be more certain, but not of destroying that soul fragment. He wanted to be more certain of absorbing it. He had practiced the spell Dumbledore had taught him a little.
After receiving Ravenclaw's legacy, his understanding of magic had begun to approach its essence. Although this spell had not existed in Ravenclaw's time, it was very easy for Harry to master now.
Still, Harry hoped to make full use of that soul fragment, ideally gaining some of the secrets behind Voldemort's power from it.
Previously, the idea had not been fully formed, but after confirming that Voldemort had once obtained Slytherin's Legacy,