Harry Potter: Dimensional Wizard

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Seimei Arata held a piece of paper in his hand, reading about the commoner named Kozuki Akimitsu. He had records of everything from the person's childhood to the moment he attended the Awakening Ceremony.

'I can't believe a commoner can awaken a deity-level Shikigami,' he thought as he placed the document away, a deep pondering look on his face.

Shikigami have different classifications. The ones with high intelligence, who can communicate, or are in humanoid shape are considered the highest level Shikigami. In contrast, the others are classified as low, middle, and high-level Shikigami based on their powers.

However, above this level are deity-class Shikigami. For many years, this level of Shikigami was believed to be nothing but a legend. Until a few decades ago, the former Emperor–Yamato Yakou–awakened a dragon that was a deity-class Shikigami.

And with this power, he became one of the greatest Onmyou Mage this continent has ever seen. He proved his strength by conquering the entire continent and establishing the Yamato Dynasty.

Unfortunately, the Emperor seemed to have passed away suddenly without any explanation or indication of what was wrong with him.

"Moreover, his Shikigami seemed even more powerful than Yakou," muttered Arata, as his eyes lit up. "No matter what, I need to get him on my side."

Arata knew the appearance of this Shikigami was probably the significant change the Divine Maiden warned him about, so he was determined to place this commoner under his control.

However, he also knew that all the royal and nobles clans had the same ideas as him. So, it would depend on he went about it.

'Should I ask for her advice?' thought Arata briefly before shaking his head. Then, he took another document with a picture of a young girl and information about her.

"Miko Satoru, Age: 14, Shikigami: Three-eyes Raven, Attribute: Divination."

"As long as I can get her in my side, I no longer need to rely on the Divine Maiden. However, I must find a way to prevent her from getting to Miko before me."

After pondering for a while, Arata called his subordinates to order them' he wanted to prepare beforehand, and as the Shogun, he still had the superiority in resources and manpower.

In the Onmyou Royal Academy, after the headmaster brought Edward to his dormitory and told him not to leave the school's premises and to be careful, the old lady left without saying anything else.

The next day, someone brought his school uniform and a book introducing the school's map, curriculum, and teachers; the book essentially served as an orientation.

And the following day was the first day of class. Edward looked himself in the mirror and was surprised by the designs of this uniform; it looked like one of those dresses from modern anime where magic exists.

He had black pants and a white vest with long sleeves. The vest looked like a long coat from the back with a silver and gold Yin-Yang on his right pectoral muscles. And as a finishing touch, there was a five points star symbol on both his shoulders. Finally, he had many pockets in both his vest and his pants.

'This design looked too much like a school uniform from [The Irregular At Magic High School]. Not just that, the entire design seemed abnormal for the current culture of this world. Could another person from Primordial Earth once reincarnated in this place?' thought Edward briefly before deciding to investigate later.

Then, he went to class. As he walked in the hallways, many people watched him while muttering to themselves. He ignored them as he headed for his class.

As he entered the class, he noticed it was similar to an auditorium with rows of seats. The front rows were lowered than the back rows. Additionally, the class seemed divided into two.

Ignoring the people's gaze, Edward saw a seat in the middle of rows on the left side of the room with his name on it, so he sat down. A few minutes later, everyone arrived.

Then, a middle-aged man dressed in a priest outfit walked into the class with a cane. Everyone could feel the serious aura emanating from his body when he walked, so they stopped talking and paid attention.

The man waved his hand, and a piece of chalk floated in the air to write on the blackboard:

"Kisuke Byakuya, Spiriti Energy Control and Analysis."

"You can refer to me as Kisuke-sensei, and in this class, I will teach you the very basics of being an Onmyou Mage: spirit energy."

Kisuke paused for a moment before looking at all the students, pausing slightly on Edward before continuing: "As you already know, every individual has spirit energy inside their bodies. However, the amount of spirit energy and how it is used determine the innate difference of every individual.

"Samurai can mostly use their spirit energy to enhance their bodies, while Onmyou Mages can use them to control the elements."

Kisuke waved his hand to manifest a small flame, a drop of water, a piece of dirt, a small plant, and a piece of metal. Immediately, Edward squinted his eyes after seeing this.

'So, the Onmyou System can use all the elements without being restricted by the innate attributes. So, what's the point of having an innate attribute? A boost?'

Despite his thought, he did not ask any questions.

"We will discuss the elements at another time," continued Kisuke. "For now, we will begin with the basics. First, control the spirit energy to leave your body. Upon success, it will look something like this."

He raised his hand before a blue ball manifested in his hand.

"This is the most basic control of spirit energy. The next step is to control it like another limb."

The blue ball in Kisuke's arm began to change shape: it first turned into a square, circle, or rectangle, along with other geometric shapes. Then, he turned it into a thread as thin as sewing string. Finally, Kisuke turned his spirit energy into various animal forms like wolves, tigers, lions, etc.

"Now, how about a demonstration?" said Kisuke before looking at the right side of the room, which is where all the nobles and royal families sat.

"Prince Yuji, how about you?"

Yuji then stood up before the blue ball of spirit energy appeared in his hand. Then, he followed Kisuke's examples to mold them into the exact shapes as the latter.

"Excellent," said Kisuke before calling the other royal families and a few other nobles. Then, he gazed at the left side. He called one of the commoners, making the latter tremble.

The poor girl stood up and raised her hand, trying to create a blue ball. Unfortunately, nothing happened even after an entire minute. Kisuke shook his head in disappointment, with even a hint of sneer deep in his eyes. Then, he called a bunch of other commoners, and no one succeeded.

A few had a few blue sparks appearing in their hands, but they never fully manifested. Finally, Kisuke called Edward.

"Student Kozuki, it's your turn."

Edward looked at Kisuke in his eyes before saying: "How am I supposed to know how to control spirit energy?"

"Excuse me?"

"You've been in this class for less than 5 minutes, barely said 10 sentences, but you expect me to be able to control reach such standard in control spirit energy."

"But the nobles students can," replied Kisuke.

"So what? It's obvious that they have some knowledge of spirit energy and have spent 5 or more years training, giving them an advantage over us, commoners."

"No excuses."

"Excuse? Why don't you make this knowledge publicly available for us commoners? Then, you can say we are making excuses."

Kisuke frowned, anger displaying in his eyes. "Using your sharp tongue to hide your incompetence will not get you far as an Onmyou Mage, Mr. Kozuki."

"Incompetence? No, I just wanted to point out the unfairness and hypocrisy of your actions." After saying that, Edward raised his hand to create a blue ball. Then, he morphed it into all the shapes Kisuke and the noble children did. But he did not stop there.

He created a replica of Kisuse with his spirit energy; it was so lifelike and detailed you could see the slight wrinkles on the corner of the sensei's eyes. However, Edward did not stop there.

He recreated the entire classroom with all the students; he created their clothes, facial features, and demeanors to the smallest detail. All the students were shocked by his level of control–especially since he had just awakened three days ago.

And a commoner, he should not have advanced knowledge of spirit energy.

Veins started appearing on Kisuke's head before he snorted very loud. Then, he ignored Edward and continued his lessons. Once he was done, he did not say anything else but quickly walked out of the classroom.

Meanwhile, Edward stood up and said: "To all my fellow commoner students, I will hold a Tutoring Session after classes. If you feel behind and need some extra help to catch up, you can attend, and I will be more than happy to help you."

The commoners immediately became excited after hearing this. In today's class, they understood the difference between themselves and the nobles. So, it would be fantastic if they could have such a genius tutoring them.

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For the people saying this arc feels like a cultivation sect. The entire Onmyou System was inspired by the anime Tokyo Ravens, with me adding a few spins to it based on the Black Clover's lore.