Mysterious Walker at Hogwarts

"Do you have anything from them on you? If so, maybe I can help identify it." Aberforth said eagerly.

"Well, I don't have anything belonging to my parents yet, but I happen to have the belongings of my three younger siblings," Dean said.

"Your parents are adults, so it's basically impossible for them to be Obscurial." Aberforth said, "But your younger siblings..."

"Then can you take a look at it for me?" Dean said, taking out the birthday gift given to him by his siblings from the dragon skin bag.

Dean didn't notice that when he saw him taking something out "out of thin air", a hint of imperceptible surprise flashed across Aberforth's face.

"The owners of these two items obviously do not have any magical talents, and they cannot be Obscurial." Aberforth first picked out the gifts from Daniel and Fianna and put them aside.

"As for this item..." Aberforth looked at the music box Knightley gave to Dean and fell into thought.

"Is there any problem? This is a birthday gift from my youngest sister Knightley." Dean asked nervously, could the prophetic vision be true?

"This music box is not simple." Aberforth said softly, his eyes falling on a portrait on the mantelpiece, which was of a young girl.

Dean saw a touch of tenderness on Aberforth's face that was too rich to be melted away.

"Is there anything special about this music box?" Dean asked.

In his impression, it seemed that Knightley had this music box as soon as she was born. Her mother said it was a gift given to Knightley by a big shot.

"If I'm not mistaken, your sister is not the first owner of this music box." Aberforth said as he picked up the music box and pressed a very secret corner inside the music box. The bottom of the music box suddenly popped open to reveal a line of text. : "Where the treasure is, there is the heart."

After reading this line, Aberforth immediately burst into tears.

"Boss, could this music box be..." Dean was shocked, looked at Aberforth, and then at the girl in the portrait.

"The first owner of this music box was my sister," Aberforth choked.

Dean was silent. He knew that the youngest daughter of the Dumbledore family seemed to be an Obscurial. Unfortunately, she died in an accident during the fight between the Dumbledore brothers and Grindelwald.

If this music box is a relic of Ariana Dumbledore, then it seems reasonable to explain why Knightley became an Obscurus. The parasitic Obscurus in her body is likely to come from Ariana.

"Boss, with all due respect, is your sister also an Obscurial?" When it came to his sister, Dean became uneasy.

"I can only say that she has the most striking characteristics of the Obscurus." Aberforth seemed unwilling to connect his sister with the Obscurus.

"Then...is there the aura of the Obscurus on this music box?" Dean asked, holding his little heart.

"Without a doubt." Aberforth gave an affirmative answer.

"Please forgive me for not being malicious, but is it possible that the breath of the Obscurus on this music box comes from your sister?" Dean asked with a glimmer of hope.

"Impossible! I know you want to ask if the Obscurus parasitizing your sister comes from my sister. I can tell you clearly that the aura on this music box is completely different from my sister's!" Aberforth suddenly became irritable. Said, "There is no doubt that your little sister is probably the Obscurial, and has nothing to do with my sister!"

Dean looked at Aberforth speechlessly. How could he shirk responsibility so crudely and make people feel guilty?

"You don't believe it, do you?" Aberforth took a deep breath and tried to calm down his emotions: "If you are skilled enough, you should find that this music box has a very clever spell cast on it. "

"Really?" Dean sensed it carefully, but found nothing.

"I don't know what this curse is called. I have never seen it before, but there is no doubt that this curse has an obvious effect, which is to inhibit the growth of Obscurus." Aberforth's tone was very strange, admiring And full of disdain.

"What did you say?" Dean thought he heard wrongly. If the function of this music box was really like this, wouldn't it become very dangerous after Knightley gave it to him?

"Yes, I am very familiar with this technique. It should have been done by the 'great' Dumbledore. He must have invented this curse!" Aberforth sneered and kept whispering. Complaining like "Why wasn't it invented earlier?"

"Does this curse have any side effects?" Dean blurted out subconsciously.

"Suppressing the Obscurus requires extremely powerful magic, so the side effect of this curse is that it will suppress the wizarding talent of the Obscurus, making them look like Muggles - in fact, this is not a bad luck." Aberforth Sighed.

"Boss, I want to know what will happen to my sister if I leave this music box?" Dean asked quickly.

"The Obscurus parasitic in her body will begin to grow. When it grows beyond her control..." Aberforth's voice suddenly dropped, and the result was obvious.

"No, I want to return the music box to her immediately!" Dean jumped out of bed almost immediately.

"It's too late." Aberforth whispered, "This spell is obviously not perfect yet. The moment the music box left your sister's side, it lost its inhibitory effect. Even if you return it now, it won't help. ——If I guess correctly, the music box has probably never left her side before, right?"

Dean froze.

Indeed, Knightley loved this music box very much and almost never left it. Now it seems that it may not be as simple as liking it at all, but she instinctively knew that this music box meant a lot to her.

"What should we do?" Dean now completely understood.

Why is Knightley immune to his magic? Why has Knightley never shown any wizard talent before? Why does the prophetic vision remind him that Knightley will be an Obscurial?

"Then what should I do?" Dean grabbed his hair dejectedly. If he had known that this music box was so important, he would have left it to Knightley anyway. Unfortunately, it was too late to say anything now.

"As far as I know, besides the great Dumbledore, there should be two people in the world who have studied the Obscurus deeply." Aberforth obviously didn't want Dean to ask Dumbledore for help, "Newt ·Scamander and——”

At this point, Aberforth did not hide the disgust on his face: "——Gellert Grindelwald!"

"You mean I can ask them for help?" Dean asked.

At this time, the system also throws out a task in time:

"Limited time mission: save the little sister

你的妹妹奈特莉·托马斯被证实是一个默然者，你当然不能坐视即将发生在她身上的悲惨命运。想办法解决奈特莉身上的默默然。限时7年（截止日期：1998年4月25日中午12点）。

Reward: Unleash Knightley's wizard talent, you will receive the title 'The Obscurial's Nemesis' and 20 skill points.Wizard reputation 1000 points.

Fail the mission: Knightley will die and you will regret it for the rest of your life. "