A promise

Important warning, the mc will be the new lord of darkness, but not as cruel or evil as Voldemort. The mc will be a revolutionary for the magical world as his grandfather and to achieve this goal he will do whatever it takes.

As for the revelation of his identity as Grindelwald's grandson, we'll be the next chapters. The reason and that I want him to be recognized in the magical world, fame, and importance to create an army.

Prinnce

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France, capital Paris 

Alexander approached the door and slammed gently on the door and soon heard slow footsteps approaching in his direction and the door suddenly opened.

Alexander looked at the old man wearing a white suit with a smile and presented himself with elegance and calm. "It is a pleasure to meet you Nicolau Flamel, my name is Alexander Lesas Grindelwald." Spoke Alexander holding the hand of Nicolas Flamel.

*Crack!*

The moment Alexander shook Nicolau Flamel's hand a sound of bones breaking echoed in the room and a groan of pain came out of Nicolau's mouth.

"Excuse me, may I come in?" Seeing that Nicholas' body was fragile, he apologized sincerely and asked to come in politely.

"Sure! Little Grindelwald, come in." Nicholas spoke by opening the door wide and let Alexander pass with an interesting look in his eyes.

After all, it's not every day that a cute little Grindelwald family boy with a black phoenix visits his house. After Alexander entered the house, Nicolas closed the door and the carriage outside became invisible.

"Darling, we have visitors, please make us some tea." Nicholas sat in his armchair while he spoke softly towards the kitchen where his wife was probably. Nicolas then looked at the beautiful boy sitting in front of him with an interesting little smile on his wrinkled face. 

"So child, what brings my humble abode," Nicolas asked Alexander with a gentle smile, though he looked at Ciri who was on Alexander's shoulder with a great interest appearing in his blue eyes.

"I'll get right to the point, Sir Flamel. I want you to prepare my wand." Alexander spoke with a calm and peaceful smile for Nicholas Flamel who trembled a little with the child's gaze. 

In that innocent look, Nicholas saw the purest darkness looking at him with a feeling full of coldness and indifference.

"Sir Grindelwald, I'm an alchemist, not a wandmaker, if you want a wand I'd advise you to go to the diagonal alley in London and look for Garrick Ollivares, he's the best wandmaker in the world." Without realizing it, Nicolau had already changed the way of talking to Alexander and advised him to go to the Diagonal Alley in London.

"If I wanted that, I would be having this conversation with Mr. Olivaras, not with you Nicolau Flamel, the alchemist who made the philosopher's stone," Alexander spoke looking directly into the eyes of Nicolas Flamel with all the seriousness of the world.

"Darling, the tea is ready. Here, cutie boy, be careful it's hot. Don't drink too fast." Nicolau Flamel's wife arrived in the room carrying a silver tray with a teapot and two very nice cups.

She then poured a cup for her husband and then poured a cup for Alexander while gently warning him.

"Thank you for the tea, Mrs. Flamel. "said Alexander thanking her for the cup of tea as he looked into the beautiful green eyes of the lady in front of him.

After serving the tea, Perenelle Flamel left the room leaving Alexander taking the cup of tea while she waited for Nicolas Flamel's response.

"I can make your wand, but I have a condition that cannot be refused." After an hour of waiting, Alexander finally heard Nicholas' reply.

"Anything in my power, I will do Sir Flamel," Alexander spoke with a happy smile as he pulled the materials from his magic wand out of the magic pocket of the black suit pants.

"All right, not something so absurd. I just want you to protect me and my wife when you need it." Nicholas spoke to Alexander while he took a sip of his cold tea. He knows he's probably in danger for the next few years with the return of Voldemort he's already predicted in the crystal ball.

Although Alexander's current strength is not very strong, Nicholas realized that the child's magical reserves in front of him are absurdly large for his age, he estimated that Alexander had the same magical reserves as a seventh-year-old student at Hogwarts.

At such a young age Alexander already has that strength, Nicholas has no idea how much this child will grow when he is seventeen.

Basically, Nicholas is making an investment for the future that will be disruptive and dangerous for anyone with a psychopathic madman who will come back to life.

"You're a smart man, Sir Flamel. I'll be in town for days, hopefully, my order will be ready by then." Alexander spoke softly to Nicholas and left some small boxes in front of the alchemist and then he disappeared from the room along with Ciri.

"Worthy to be descended from the first lord of darkness. Such frightening pressure at such a young age, perhaps a new Dark Lord will be born in the future." Nicholas Flamel whispered, watching Alexander disappear from his house as he sighed with relief.

Feeling the back of his clothes wet with sweat, Nicolas sighed and picked up the boxes on the table and headed for his laboratory.

Unknown alley 

*Poop*

With a strange sound, Alexander and Ciri appeared in the dark alley of Paris full of garbage and dirt everywhere. 

Alexander smelled the stench of the alley. He twisted his nose, but suddenly feeling a look on his back, he turned his head and looked back.

What he saw when he looked back, will never leave his mind. Alexander swears that in all her life, he's never witnessed eyes as beautiful as what he's seeing now.

Purple, that beautiful purple eyes like a nebula in space were engraved deep in his heart, so Alexander would never forget.

Ignoring all the garbage in the alley, Alexander walked to the little figure shrunk in the wall with the firm and fast steps. Looking down from the top at the little shrunken figure on the wall, Alexander extended his hand to her and said the words that would unite his life with her forever.

"If you hold this hand, bear in mind that you will be my accomplice for life. I will make a revolution that will shake this whole world, the walls of the city will be stained with the blood of good and bad people. The streets will be filled with people worshipping and hating me. You agree to be my accomplice in this bloodbath." Alexander spoke to the shrunken figure on the floor with the coldest voice in the world.