School Hospital.

"Madam Pomfrey, I'm here to see Miss Hermione Granger." Felix said.

"Oh, her." Madam Pomfrey complained to him, "Young wizards nowadays are too troublesome, abusing magic potions, and have no reverence... According to her condition, she will have to stay in the hospital for at least three weeks."

Felix asked with great interest, "Can you determine what potion caused the effect?"

"It should be a polyjuice potion mixed with cat hair. It's ridiculous. I don't know where they got the potion from." Madam Pomfrey said as she poured half a cup of potion from a large bottle. "On Christmas Eve, when the two young wizards brought her here, I was shocked. I almost thought it was irreversible magical damage."

"Polyjuice potion..." Felix chewed on the word. After a few seconds, he gently said to Madam Pomfrey, "Ma'am, I'll bring the potion to her on the way." Felix

pushed open the door and walked into the ward.

There were seven or eight beds in the room, but only one was covered with a white curtain. When Felix approached, the curtain opened from the inside.

"Madame Pomfrey? Are you here to deliver the medicine?"

A furry head poked out, and it was his assistant from the sound of the voice.

Hermione froze when her eyes met Felix's.

"Ah!"

The little witch screamed and immediately shrank back, pulling the curtain tightly, and the whole bed shook violently.

But with just a quick glance, he had seen what his assistant looked like now.

Her face was covered with brown cat hair, which mixed with her own hair. There were a few cat whiskers on both sides of her cheeks. Her eyes turned ginger, and there were two erect pointed ears on her head.

"Miss Hermione Granger, I heard about your experience from Potter and Weasley, so I came to see you." Felix said with a smile in a tone that couldn't help laughing.

He waited quietly for a few seconds, and Hermione's trembling voice came from behind the curtain, "Hello, Professor."

"I brought your potion, and--" Felix said, "If you don't mind, I can take a look and try to see if I can help a little."

"Professor, you mean... you can solve my problem?" Hermione said in an expectant tone behind the curtain.

Felix was still repeating her appearance in his mind, and he tried his best to stay calm and said, "I can only say, give it a try, your situation is quite rare." Hermione opened

the curtain a little bit, she raised her head and glanced at him quickly, and then buried her face in her hands.

Felix put the potion on the table beside him and carefully looked at the little witch's appearance at the moment.

This situation is really quite rare. Polyjuice Potion is difficult to make. Even the potion master does not have much stock, and will not use it easily-the chance of something going wrong like this is even lower.

Hermione felt his probing gaze, and she asked in a low voice, "Professor, do you have any solution? Madam Pomfrey said that my condition is very troublesome and it will take at least three weeks to heal."

"Well, it's the use of the Polyjuice Potion incorrectly, right?" Felix thought seriously, this situation is indeed difficult to solve.

He stretched out his wand and gently tapped Hermione's forehead, and the tip of the wand emitted a circle of golden light.

The little witch's face did not change at all.

"Well, human transfiguration doesn't work, it may conflict with the effect of the potion... It's really interesting, uh, I mean, it's really troublesome. Then, try an unpopular spell and see."

In Hermione's eyes, Professor Hepp cast spells one by one with great interest. He also took out a piece of parchment and recorded the effects of various spells on it.

"This doesn't work!"

"This does work a little, but it's not obvious."

"How about trying this?"

Hermione looked at Felix with a dull face. Are you trying to help me? I have seen through you, professor!

Finally, a rather obscure spell worked.

The brown hair on her face fell off and disappeared quickly, and her skin became fair and clean again. Hermione felt the change, and she first touched her face, then took a small mirror from under the pillow to examine it carefully.

"Oh, my God." Hermione covered her mouth.

At this moment, her appearance had changed a lot. Most of the thick and lush brown hair on her face had disappeared, but the whiskers and a pair of pointed ears on her head were still stubbornly left.

But this effect alone was enough to surprise Hermione, who was mentally collapsed.

"Professor, what kind of magic is this?"

"A light transfiguration that can modify some minor flaws on the body. Of course, it is temporary, and the magic effect can last for about two hours." Felix explained.

"Is it human body transformation?" Hermione said very knowledgeably. She had planned to learn this magic, but at this moment she was a little disappointed, because human body transformation is a very difficult magic.

It is so difficult that even most adult wizards cannot do it.

"You can say that, but its effect may not be as good as you think - the places it can modify are quite limited. You know, this spell was invented by a vampire, and its original function was just to cover their fangs."

"Vampires?" Hermione asked with great interest. Most of the troubles that troubled her were solved, and her attitude became much more lively.

"Yes, in the Middle World, vampires are simply hated by everyone. In order to hide in the crowd, they developed this magic. But if you ask me, the effect is really average, and it can't be compared with human body deformation or Metamorphosis. Now basically no one uses it."

"Professor, I heard that Metamorphosis can change your appearance at will?"

"Yes," Felix glanced at her, "so you don't have to take the risk of taking Polyjuice Potion."

Hermione lowered her head, and the pointed ears on her head drooped.

"Professor, I..."

"You brewed Polyjuice Potion privately, right? I mean you, Potter, and Weasley."

Hermione raised her head and looked at Professor Happ in surprise.

"Yes," Felix said casually, playing with his wand. "That's easy to guess, especially when I think about the fact that you once asked me for information about special potions. I introduced a total of six powerful potions, but you were obviously more interested in Polyjuice Potion."

"Polyjuice Potion can change a person's appearance, and it can indeed be used to obtain information without anyone noticing—"

"So, what I want to know is, who do you suspect?" Felix looked at Hermione.

"Malfoy." Hermione whispered. "We suspect he is the heir of Slytherin."