I became Voldemort

Cyrus picked up a time-turner.

This prop is engraved with a spell called the hour reversal spell.

In theory, as long as you learn the hour reversal spell, you can go back to the past even without a time-turner. But it's not that simple.

In addition to spells, the sand in the hourglass is also magical, and the flowing gravel seems to be a manifestation of time. In the future battle of the Department of Mysteries, the glass cover in front of Cyrus was broken, and the time turner completely disappeared from the world.

Any force involving time must be powerful and mysterious, he doesn't know when will the cooldown be over for that mysterious Diary Entry skill, which doesn't just send him back in time that day but regressed the time itself so instead of wasting on that matter Cyrus right now will have to make do with the time turners. Cyrus' end goal is to become the controller of time.

Of course, the limitations of the time converter are very huge, and it can even be said to be a bit useless. But Cyrus was still unwilling to give up this opportunity. Sometimes just a few hours can change a lot of things.

The third door Cyrus opened was one he had never known before.

He knew seven of the twelve doors. The Hall of Prophecy represents the future, the Hall of Time represents the past, the Hall of Brains and the Hall of Planets represent thinking and the universe,  The Death Chamber represents death itself, and according to Dumbledore, the locked door should represent "love".

And behind the door, he opened now were colorful albums.

"This is...?"

He walked slowly inside and saw the strange models in the hall, all kinds of magical plants, magical animals - even wizards among them - everything was displayed in front of Cyrus' eyes like a piece of history. 

From ancient times to today, those magical species have continued to evolve and become extinct, but if we go back to their roots to find the beginning of the mystery of magic, there is no trace.

Now he knew what exactly existed in this hall.

It is magic itself!

This is destined to be a question without an answer. No one knows where magic comes from.

Cyrus saw that there were some manuscripts in the room, and he speculated that they were probably left by the silent man guarding this room.

The Silent Man is the most mysterious profession in the Ministry of Magic. In addition to keeping the secrets of the Department of Mysteries, the Silent Man also needs to study the secrets that occasionally remain in the Department of Mysteries.

Of course, over the years, many things have been deemed unexplainable by default. Nowadays, most of the silent people are responsible for the work of the Prophecy Hall, or just observing the changes in the strange head in the Brain Room.

The manuscript that Cyrus found was also very old, and the parchment was dry. He held it in his hand as if it was about to break into pieces. The handwriting on it is no longer obvious, but you can still barely make it out.

[Magic - Some people call it ether, which is a power that can change reality. But the existence of magic power itself is actually unreasonable. The existence of nature has its fundamental laws, but magic seems to come from outside the rules. It breaks the original rules and forms new rules——]

[Research on □□□——]

When Cyrus saw this, the text behind it was completely indecipherable. He tried to cast a repairing spell, but it didn't work.

So he put down the parchment.

It would be unwise to spend too much time on this manuscript. If it had really recorded some useful information, the people from the Ministry of Magic would have put it away long ago. How could it be left here like this?

After walking out of the Magic Hall, he checked the other halls one by one. Several halls were completely locked.

If you really try to force it open, it might cause quite a stir. Furthermore, Cyrus didn't know what was locked inside the door and didn't dare to open it rashly.

"The key to Vault 12 is not in the Department of Mysteries, so where can it be?" Cyrus walked out of the black corridor, lowered his head, and played with the time-turner.

Although the key to Vault 12 is related to the secrets of ancient magic, in the end, it is just a key to Gringotts, and it is normal that it has nothing to do with mysterious things. As a result, Cyrus temporarily lost the scope of his search.

It is obviously unrealistic to search all over the Ministry of Magic. The place is much larger than Cyrus imagined, and there are traces of the Invisible Stretching Charm in various places inside. Finding a key here is like looking for a needle in a haystack.

Moreover, he doesn't have time to search bit by bit now.

He could feel that the magic he had applied to the fireplace in the main hall was being destroyed. Apparently, the Aurors were on their way.

"It's better to leave first."

.

.

.

"Now I know why Mr. Cyrus asked you to learn the Patronus Charm. He must have expected this situation."

On the Hogwarts Express, Hermione and Ron helped Harry up with concern. Lupin beside him took out the chocolate he just bought and gave Harry a little.

Lupin, who had just driven away a Dementor, didn't have time to get over the joy of seeing Harry. He heard Hermione's words and immediately asked: "Did anyone know in advance that all this would happen?"

Ron and Hermione then remembered that there was a fourth person beside them in the carriage.

"It's... one of our friends. Yes, friend!" Ron explained quickly, "He, he thought that since the Ministry of Magic asked the Dementors to search for Sirius Black and T-Tom Riddle, then Harry may be in danger as Sirius is searching for him and the dementors will come close if they found him close to Harry, and those things are also not worthy of trust."

Ron spoke more smoothly: "So he suggested that Harry learn the Patronus Charm in advance, which is the spell you just cast because only this spell can drive away the Dementors."

"It seems that your friends are very far-sighted." Lupin said kindly and gently, "Dumbledore doesn't like them either. By the way, Harry, if you want to learn the Patronus Charm, you can come to my office - Ah! I forgot to introduce myself it seems! My name is Remus Lupin, and as expected, I will be your Defense Against the Dark Arts professor this semester."

"Thank you, Professor Lupin." Harry was still weak, and he was ashamed of how he was acting at this moment. The Dementor can amplify a person's fear, but no one in the train was scared to death like him.

The stalled train started moving again, and by the time of night, they finally arrived at Hogwarts.

Harry was sent to the school hospital for examination, while Hermione was called to the office alone by Professor McGonagall.

"Miss Granger, I have something to tell you about your course schedule this semester." Professor McGonagall pursed her lips - this was almost her signature expression - and pulled out a class schedule.

Hermione accepted it and took a look:

"Nine o'clock in the morning, Divination class, Muggle Studies, Arithmetic Divination... three classes at the same time?"

"Yes, I think you have noticed that last semester, you were the only student who took all the courses. And given your past grades and performance, all the professors agreed that you have the ability to complete all the courses." McGonagall said.

Although one wasn't able to tell from her expression, Hermione could tell that she was happy.

"But how can I have three classes at the same time, Professor? Percy said you would have a way to help me solve this problem, but he didn't say how."

"Yes, of course, he won't tell you,"

Hermione saw a rare slight upward curve in the corner of McGonagall's mouth, which made her wonder if she had seen it wrong.

"Actually, the time turner is subject to confidentiality regulations. It is only provided to a small number of outstanding students. After you handed in the course selection form last year, I wrote many letters to the Ministry of Magic before they approved it." McGonagall was happy.

She took out a small golden hourglass.

"You only need to twist the button on it, and you can reverse time, but it can only be up to five hours." McGonagall said seriously, "The time turner is a very scary magic item. Last semester, Albus was able to capture Tom Riddle while relying on it. I hope you understand the seriousness of it."

"Headmaster Dumbledore caught Mr. Riddle with this?" Hermione looked at the small thing in Professor McGonagall's hand in surprise.

McGonagall nodded heavily,

"Next, I want you to remember the rules for using the Time Turner: first of all, never use it for anything other than studying... second..."

Hermione picked up the time-turner.

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