The Magical Principles of Natural Philosophy at Hogwarts

"Is there a spare dormitory?" Hermione was stunned, "Have all the girls there happened to go home?"

"Of course not, but there are not many people staying in school. I can let them go to another dormitory to squeeze in."

"Really?" Ron couldn't believe it. "Those girls are willing to listen to you? Is what you say more effective than the prefects?"

"They are all my friends, so they are naturally willing to help me." Melanie's smile contained a hint of charm.

Erwin was also a little surprised. Melanie did a better job than him in uniting his classmates. But if you think about it carefully, it is not surprising. He spends most of his time tinkering with his own research and does not interact with other students.

But this female vampire has a lot of free time. She doesn't have much to do in Hogwarts. She can't learn much about the wizard's magic. Apart from reading some leisure books, she also interacts with other little girls.

Although vampires spend most of their lives dormant, Melanie also has at least decades of experience and social experience. According to her, she was one of the spokespersons of the vampires in regular society in Romania, allowing a group of eleven and twelve-year-olds to

It can be said that it is easy for the little girl to be convinced by her.

If you give her a little more time, she might become the de facto female student council president.

Hermione wanted to ask Melanie why she wanted to help her, but she swallowed the words as soon as they reached her lips.

She almost forgot that she and Erwin were in a relationship, and Erwin and herself...were considered relatives.

Hermione felt an indescribable emotion in her heart.

"Now that the dormitory problem has been solved, it's best for us to return to Gryffindor Tower now." Erwin said: "It is very risky to stay here and it will be easily seen by others."

Everyone agreed.

"Put on the hat of your robe, Hermione. Well, you have to bend down again, otherwise the abnormality on your face will still be seen," Harry suggested.

"And a tail." Ron said, with an unbearable smile on his face.

Hermione glared at him angrily and curled up her cat's tail hanging outside her robes.

Suddenly there is an extra part that has never been there before. This feeling... is really strange...

Erwin frowned and looked at it for a while, then took off his robe and handed it over. "Wear mine." He said briefly.

This is not a romantic plot, the fact is that he is now the size of an adult, and only his robe can completely cover Hermione.

Hermione didn't say much, took Erwin's robe and put it on herself.

She didn't need to worry about whether Erwin was cold or not, because she saw the fire dragon leather vest he was wearing, a light garment with a constant warmth effect through a simple magic sequence, which he made himself last year.

Harry, Ron, and Hermione all have one, which was a Christmas gift from Erwin last year.

The loose robe wrapped Hermione tightly, "Then let's go." Erwin said.

He was the first to walk out of the bathroom, followed by Harry and Ron, followed by Hermione. When she reached the door, Melanie suddenly came over.

"Can you feel Erwin's remaining body temperature?" she asked quietly, then looked past Hermione with a smirk, not giving her time to react.

Hermione's body froze, she secretly clenched her fists and took several deep breaths.

The walk from the girls' bathroom on the second floor of the castle to the Gryffindor Tower was not long, but Hermione was very wary. She was afraid of meeting someone. So she kept hiding behind the three boys, intentionally or unintentionally.

Fortunately, it was Christmas vacation and it was night time, so I didn't meet anyone.

But they were afraid of nothing. A bright lantern shone unceremoniously on their faces. Behind the lantern was an ugly aquiline nose, and behind the nose was a gloomy face.

Filch, the administrator, has never given any students a good look since his cat's accident.

Grain shit

"What are you doing here, Harry Potter?" Filch seemed to have always disliked Harry and often targeted him, "And that faceless student, what's going on with you?"

Harry secretly said something bad. He was thinking about how to deal with Filch, but Melanie spoke first, "Merry Christmas, Mr. Filch."

This sudden greeting made Filch a little stunned, and his expression couldn't help but soften a little.

Erwin gestured to Harry and Ron to stop talking.

"My friends and I are on our way back to the dormitory." Melanie continued to say in a brisk tone: "It's already very late. We won't come out to cause trouble to you after we return to the dormitory. Wrapped in clothes

It's Miss Hermione Granger, she accidentally wet herself in the bathroom, and you know, we're all juniors and we don't know how to do the drying charm yet."

Harry and Ron nodded repeatedly.

Filch looked at them suspiciously for a while, then looked at Melanie, and his tone was surprisingly kind, "Then go back quickly, you are a good boy, girl, don't talk to these shameless bad boys in the future.

Let’s play together.”

He said, glared at Harry and Ron sternly, then turned around and walked away.

After losing sight of Filch's back, Ron couldn't help but ask, "How did you do that? Why is Filch so friendly to you?"

"Because I look cuter," Melanie said with a smile.

The journey back to Gryffindor Tower was uneventful. The others were waiting in the common room. Melanie entered the girls' dormitory, and on the pretext of holding a Christmas party to enhance their relationship, she easily let the first-year girls spontaneously

Concentrate into another dormitory.

This creates an extra separate room.

Hermione was temporarily placed there. There were no classes during the Christmas vacation. For her, it was just a few days without leaving home.

In principle, boys should not enter the girls' dormitory, but if the matter is urgent, Erwin can also say openly that he has no dirty intentions.

What's more, for him who has mastered the four complete stealth spells, he can easily prevent any students from noticing his whereabouts.

Now it was necessary to prepare a polyjuice potion containing Hermione's own substances. She had become like this, and her hair was obviously inappropriate. Erwin pricked her finger and took a little blood.

The blood of a wizard can basically be said to be the safest form of identity authentication.

Add the drop of Hermione's blood to the bottle of polyjuice potion that Erwin received in the morning, and the potion quickly turned golden brown.

"It looks pretty good, and even has a hint of mango aroma." Ron commented fairly, "In comparison, the bottle of Crabbe Essence Solution I drank before... is just like the vomit of a troll."

Enter Hermione's dormitory room and let her drink her own polyjuice potion. After a few minutes, it is obvious that the hair on Hermione's face has become much shorter.

The next step is to use the Transformation Blocking Spell. The effect of this spell can be known just by looking at the name. It prevents the transformation effect that is occurring or is about to occur. The effect of the Polyjuice Potion is divided into two stages, transformation and reversion to the original shape. Now use Transformation

The purpose of the blocking spell is to cancel the reversion to the original form, because only the transformation effect is needed to gradually transform Hermione back into herself.

The solution provided by Riddle is effective. As for whether the deformation blocking spell can be used in battles between wizards, this question can be understood in this way. The scalpel used for medical treatment also has the ability to hurt people, but it will be more powerful than normal weapons on the battlefield.

More efficient?

Of course not, but it does not rule out the possibility of occasionally winning by surprise under certain circumstances.

The first stage of recovery treatment was over, the effect was pretty good, and Hermione's mood had calmed down a bit.

"Get some sleep first and don't think too much." Erwin said.

He returned to the common room and told Ron and Hermione the good news.

The two boys were relieved.

They were also tired, so they chatted with Erwin for a few words, and then went upstairs to their dormitories together. Today's experience was really unusual for them.