Hogwarts: I act like a boss in front of Hermione

"Although Gray and Natsu often mess around, you have to treat them as brothers. Especially in the future, Natsu may cause a lot of trouble without my restraint, so you remember to help your brother take good care of him. Maka President Rove is already very old, and Laxus ran away from home, making him mentally and physically exhausted. Please help him with the guild affairs..."

"...Meditate well. Although the realm of a wizard apprentice is useless to you, when your magic power stops growing, the cultivation method I will give you will help you reach an unprecedented realm..."

"From the day I recognized you as my sister, my brother has been happy every day... I have had your company for the past three years, and I really can't bear to leave you..."

"Erza, although my brother can't accompany you anymore, you have to be strong and promise your brother not to cry. My family is asking for your help..."

"Before you went to participate in the S-class promotion competition, didn't my brother promise to give you a surprise? Before you opened the letter, you should have heard that the Tower of Paradise, which caused you unforgettable pain and often appeared in nightmares, has been destroyed by me. . The person who betrayed you and made you abandon your companions, my brother will settle the accounts with him for you. Forget the past completely, this is the last thing my brother will do for you..."

"I'm sorry, Erza, my sister, don't hate your brother for making arbitrary decisions!"

"Your brother, Noel Sirius Black."

……

The letter paper was completely wet with tears, 'I'm sorry, brother. I've let you down! I can't control my tears. ’ The clenched hands trembled from time to time.

"Brother, you are a big fool. I fought with Mira because I couldn't stand her pestering you every day. I was afraid that she would take you away from me..."

Wiping the tears from her face, Erza growled at the letter, as if the person in front of her was not the letter but Noel himself.

"I'm the one who's sorry. If I could have faced him earlier and gone to the Tower of Paradise to settle the matter earlier, brother, you wouldn't have left me..."

……

"Brother, I will wait for you to come back. Although they think you are dead, I believe you will come back. I will wait for you!" Touching the eyes that gradually turned purple, Erza whispered firmly, maybe for comfort. She, and perhaps Erza, really thought that Noel would come back to her.

Erza carefully collected the letter and wiped away her tears. She was a strong person. Now that her brother was gone, she decided to become stronger with her brother's expectations in mind and complete the tasks he entrusted to her.

She believed that they would meet again in the future.

……

"Pfft~"

Noel fell to the ground instantly when he returned to the Room of Requirement. Unable to suppress the explosion of injuries, he spit out a mouthful of blood on the ground.

"Damn the will of the world! Damn the black dragon! Wait for me for three years, three years later. I will definitely go back for revenge!"

"Ahhhhhhhh!~"

Noel's face was ferocious, his whole body was trembling, and he let out low moans from time to time. Perhaps because it was too painful, Noel's gums began to bleed due to the excessive exertion of his chewing muscles.

Holding back the pain, Noel took out several bottles of magic potions from the ring and drank them all without hesitation. These potions included healing potions, blood tonics, sedatives, vitality tonics, etc.

It will take some time for the effect of the potion to appear, and Noel now has to concentrate on expelling the violent and domineering magic power from his body.

.......

"So, in order for Erza not to meet Jellal, the price for me destroying Jellal's soul is to have one of his legs bitten off by that crazy dragon."

Noel sat slumped against the wall, tilting his head, his purple eyes filled with deathly silence, looking at the blood stains left on the floor and the missing right leg in front of him, smiling helplessly.

After Noel got rid of the magic power left by the black dragon in his body, he began to think of ways to regrow his right leg that was eaten by the black dragon.

But the result made Noel very desperate. He had tried all the potions with healing effects and the magic or spells that could heal in the three worlds. He clearly felt that the potions and magic were beginning to have a positive effect, but in an instant they were all blocked. The black aura emanating from the wound was offset, preventing Noel's right leg from growing.

This is a curse! Not only was Noel's right leg unable to grow back, but the spiritual sea in his brain was also implicated. Noel was so big that only one-third of the spiritual power that Noel could mobilize was left.

Does Noel understand that this curse was imposed on him by the black dragon? Recalling that after he used the killing curse to bombard the unconscious Jellal, and when he felt the last trace of Jellal's soul dissipate, Noel sensed the threat of death, and without hesitation, he turned the key and wanted to leave this dangerous place quickly. But Noel was still half a beat late, and his right leg was torn off by a huge black shadow.

Noel recognized that black head as a black dragon at a glance.

"Why does it appear here??" This sentence came to Noel's mind at the last moment of leaving.

"This is the power of the world's will. I changed the most important plot direction, so do I let the black dragon destroy me?"

"But based on my understanding of the black dragon, it is impossible for him to use curses as an attack method. His right leg is the best proof."

"Could this black curse be you? God Anxelam!!" After understanding all the reasons, Noel's expression became ferocious again.

"I will go back, I will definitely go back. I will make you repay this revenge twice as much." The low and slow voice filled the whole room, making people feel chilled.

After a long time......

'Let's solve the immediate problem first. First of all, I have been to another world for three years. Only half a day has passed here and it has just arrived in the evening. So my body shape needs to change to what it was three years ago’

‘You can drink Polyjuice Potion in the short term. When I left, a strand of hair slipped out. If the curse doesn't interfere, this plan can be implemented. ’

‘But this is not a long-term solution. Putting aside the side effects of Polyjuice, I had limited hair before and could only last for a month at most. ’

‘Transfiguration? no. But it is possible to optimize the magic spell based on the transformation spell and develop an improved spell that allows one to transform into any form. This is very feasible. First, in order to spiritualize the sheep transformation spell, whether it is a transformation spell or a magic circuit, it is very important to me. It has been completely mastered. ’

‘Secondly, I can rely on the Animagus’ spell, and I seem to have a cousin who is a Disguisemagus. I really envy her now. ’

‘If that doesn’t work, go find that person. ’

After thinking of the plan, Noel cheered up, took out a bottle of polyjuice potion from the ring, and then put a piece of hair that he had cut off before crossing into the potion. After seeing that the hair was completely submerged in the polyjuice potion, Noel felt a chill in his heart. He held the potion in both hands and drank it into his stomach in one gulp.

"Gudu!"

After a while, Noel's body changed and began to shrink in all directions, slowly transforming into the Noel before time travel.

'Fortunately, the curse did not prevent the effect of Polyjuice Potion, but... the right leg did not change. I was too idealistic. ’

‘I can only make a prosthetic leg. Don’t even think about receiving magic. My magic power can’t flow into the wound now. It is completely impossible to use the reception magic to install a leg on myself. ’

‘Fortunately, I learned alchemy in the first world, plus the knowledge I gained from my previous life. Use magic circuits to simulate nerves, avoid the cursed area at the wound, and bridge them to the nerves in the thigh, so that I can have a leg that can walk normally. ’

Just as he was told, Noel took out the long-forgotten trophy, which was the clay figurine he got from Fukai of the Earth. This familiar has been thrown into the ring since it was captured by Noel at the beginning. Except for a piece of little finger that was used before, the whole body of the familiar is still intact.

During the three years in Fairy Tail, Noel had long forgotten about it. He thought it could only be used as a souvenir and stored in a ring, but he didn't expect that it could still be used now.

Using the right leg of this familiar, who has a complete simulation talent, to make a prosthetic limb that suits him. As far as the current situation is concerned, this is the most correct choice.

Waving the wand in his hand, Noel placed the demon on the test table, and Noel controlled his body to float to the front of the table. With one foot on the ground, the golden rooster's independent posture made Noel very uncomfortable without his right leg.

Start to determine the location of the amputated right leg, cut, reshape and strengthen the nerves of the familiar's right leg, design the magic circuit connecting the nerves, carve the magic circle, and build a second magic source on the prosthetic limb...

Time passed little by little, and sweat had wet Noel's clothes, but Noel remained unmoved and devoted himself wholeheartedly to refining the prosthetic limb.

"Yes, although I have refined many armors and weapons for Erza before, from a certain point of view, this prosthetic limb should be regarded as a real magical creation."

Looking at the prosthetic limb with "mimicry" properties in front of him, Noel said a little excitedly.

In order to give himself the best prosthetic limb, Noel consumed a large amount of precious items during the refining process. In terms of the hardness of the prosthetic limb, there should be no creature or magic in this world that can damage it.

In addition, since the raw material is the right leg of an earth familiar, the prosthetic limb has a very high affinity for earth elements, so Noel used mithril and dragon blood as materials in the prosthetic limb to burn three powerful earth magic circles. The two earth magic arrays are overweight, weightless and earth-shattering respectively.

These three types of magic were learned in the first different world, and were optimized and improved in the second different world (Fairy Tail). These three magics are Noel's favorite magics in the second world. They are group attack magics and are very suitable for clearing out cannon fodder.

Nowadays, prosthetic limbs are used as a medium to activate these three kinds of magic. Theoretically speaking, the power of Binol using the wand to cast or the magic circuit has been greatly improved. The most important thing is that there is no need to consume the magic power of Noel's body.

Because in the process of refining the prosthetic limb, Noel not only implanted a second magic source into the prosthetic limb, but also prepared a magic circle for the magic source to absorb magic power. As a mature prosthetic, of course, you have to obtain the magic power yourself.

‘If this was still Fairy Tail, the power of these three magics should be increased by 3% based on the original level, but here half is good. ’

In fact, the prosthetic limb can also burn a few more magic circles, but in order to retain the mimicry talent of the familiar to the maximum extent. Noel still chose the most conservative enchantment.

"The next step is to install the prosthetic leg on your leg." After thinking for a while, he waved the wand in his hand and controlled the prosthetic leg so that the root of the prosthetic leg touched the wound. At this time, more than a dozen blue filaments protruded from the root of the prosthetic limb. These were the magical nerves refined by Noel.

Noel controlled these filaments, allowing them to avoid the curse on the wound, enter Noel's body, and first control a part of the filaments to connect to his femoral nerve.