Chapter 404: Reversing Time, a Magic Book Hidden in the Past

"Maybe there is..."

Dumbledore said slowly, "But no one knows where it is written down. Even the Ministry of Magic can't repair the damaged Time-Turner now."

"Okay!"

Andy gave an "OK" sign, "It can only be used for learning...that's actually pretty good."

In any case, the Time-Turner is a prop that can reverse time.

Andy just wants to witness its magic now.

If this thing really isn't useful, Andy might choose to cancel a few courses and make his time plentiful again.

"By the way, Professor,"

Andy suddenly asked, "Since the Time-Turner cannot change the past, what is its upper limit? At most, how many hours can it turn back the time?"

This thing is problematic!

Andy suddenly thought that if someone used the Time-Turner to go back in time and witness the development of some events, then the fact that he had infiltrated the Ministry of Magic should have long been discovered.

However, until now, the Ministry of Magic has not sent anyone to arrest him.

And Sirius.

The Ministry of Magic has not used the Time-Turner to discover how Sirius escaped Azkaban.

Is it because they didn't think of it? Or is there some kind of usage limit?

"The upper limit for its use is five hours,"

Dumbledore explained. "If you use the Time-Turner to go back more than five hours, a serious time accident will occur."

Andy nodded upon hearing this.

Five hours...

Then it's fine!

But when you think about it... The Time-Turner can only be used for five hours, and you can't use it to change the past, or even let your past self see your future self.

It doesn't seem to be very useful!

Except in some special circumstances, the Time-Turner is basically useless.

"I know!"

Andy reassured him, "I won't use it for anything other than studying."

Dumbledore nodded and handed the Time-Turner devices to Andy and Hermione, saying, "It's late, you should go to class."

"Goodbye, Professor!"

Leaving the Headmaster's office, Andy hung the Time-Turner around his neck and placed the timer at the other end inside his clothes, making sure it was not visible to others.

"Today is Thursday, I remember that in the morning there are Charms and Defence Against the Dark Arts Classes."

Andy recalled his class schedule for the day: "In the afternoon, there are Transfiguration, Arithmancy and Divination classes, and in the evening there is a History of Magic class."

"But Divination and Arithmancy are held at the same time, so we have to use the Time Turner to go back two hours after the Divination class is over."

When he thought about it, Andy's head grew bigger and bigger!

The classes were packed, and there were classes all day long, even taking up the evening hours.

What's the difference between this and high school?

"Oh, Merlin's knickers!"

Andy sighed, his expression falling. "We're going to have classes all day today."

"And not just today..."

Hermione gave Andy another hard blow. "Our days are full of classes. Even so, there's not enough time, and we'll have to use the Time-Turner to attend a few more classes."

"If there's a lot of homework, we'll need even more time to do it."

At the end of her tirade, the young witch was full of fighting spirit and couldn't wait to get to class.

Andy: "..."

What have I done to deserve this!

***

The classroom for the Charms class was also on the seventh floor, and it was just around the corner from the entrance.

The class was with the Gryffindors.

Professor Flitwick, standing on a pile of books, was talking enthusiastically about the technique for using a certain spell – one they had learned last year – with his booming voice.

Andy sat below him, expressionless, and for a moment he felt a little drowsy.

Hermione gave Andy a sideways glance and nudged him with her finger.

Andy immediately sat up straight.

'Time reversal spell...'

The content of the lesson was of little use to Andy, so he simply used the time to think about his own things.

Dumbledore said that the Time Reversal Spell had been lost, and no one knew where it was written down. Even the Ministry of Magic could not repair or create a Time Turner at the moment.

Andy believed this.

Magic books also have magic powers.

Just like The Invisible Book of Invisibility, which is an invisible book – because the spell itself has a certain amount of magic power.

When a spell is written down in a book by a wizard, the book then possesses a certain amount of magic power.

This is the case with most books in the wizarding world.

The same applies here:

If someone writes the 'Time Reversal Spell' in a book, then the book will have the power to reverse time – it will hide itself at a certain point in the past.

That's why we could never find this book in the present.

'So... if you want to learn the time reversal spell, you have to go back to a certain point in the past, find the book that "gone back to the past", and bring it back to the present.'

'If that book really exists, this is the only reasonable explanation!'

Andy tried to analyse it.

If someone invents a spell that can reverse time and also uses the spell to create a Time-Turner, then he will definitely record the spell and pass it on.

This is a priceless legacy.

No one would give up their legacy.

So... the book containing the 'Time Reversal Spell' must exist.

But this book, which has the power to reverse time, has hidden itself at some point in the past.

That's why the spell has been lost!

'If there is one place in the wizarding world where this book can be found...'

Andy believes that place must be the archive of the Department of Mysteries!

'I have to go there!' Andy thought.

First, it is necessary to find the archive of the Department of Mysteries, and then use the Time Turner to go back in time...

As he thought about this, Andy frowned slightly.

Andy never believed that if he could think of something, others could not.

The Time Turner could be found in the Department of Mysteries of the Ministry of Magic, and Andy did not believe that the Unspeakable had not tried to go back in time to find the book that could reverse time.

However, the spell was still lost.

'Did they not find it?'

'Or... one has to go back to a specific point in time!'

Andy thought of a possibility.

If the book is hidden one hour, 28 minutes and 36 seconds ago, then you have to go back to that exact second in the past.

Because only in this way can you find the book.

Otherwise, even if you are only one second off, you won't see the book.

"Tsk!"

Andy felt that his analysis might be correct. The book was definitely hidden in the past at some point.

But to find it, you have to go back to the past precisely.

And the prerequisite for all this is that you must know the time coordinates of the book!

----

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