HelixTech Magical Industries was one of the top research industries in MagiTech. HelixTech industries were working on a project called Project Genesis in which they hoped to create 2 machines 1 being a Mana Engine which would work purely on mana and the 2nd being a Mana Generator which could generate mana from the ambient nature.
HelixTech had a team of 100 top notch alchemist, enchanters, rune experts and MagiTech Engineers. Wilhelm was excited to work with such a team, even if he didn't play a major role in the project the experience itself was once in a lifetime opportunity.
Wilhelm worked closely with the rune experts to craft a rune which could hold the heat produced by the engine and lower the mana fluctuations. The prototype runes he saw were good no doubt but being good won't be enough for such project, they needed to be perfect.
Wilhelm used Ancient Runes he learned in the Arc which were used in a cavern below Hogwarts, althought Wilhelm didn't recall any mention of cavern being below Hogwarts from the books but he brushed it aside thinking it was probably from the chamber of secrets.
The runes turned out to efficient and sturdy and the team shifted their focus on containing mana from the engine.
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2 years later.
A few days before the scheduled run of the mana engine on November 10th. Wilhelm was walking home thinking about what his mom had made for dinner when he heard a scream, he reinforced his body and ran towards the direction of the scream.
In an alley a man was lying, lifeless, his body pale, no visible sign of blood or a wound. Wilhelm examined his body and confirmed it was an effect of the killing curse. Clutched in the mans hand was a time turner.
Time turners were rare and regulated no one without both money and power could get their hands on one. Wilhelm picked the turner up and saw the magical dust inside it, he called the authorities while quitely pocketting the turner.
Wilhelm didn't know why but he felt that the turner would be usefull to him one day.
On November 10th Wilhelm with his team stood behind the enchanted glass and prepared for the test run of the engine. Several people were pouring mana into the runes and making sure it was all perfect. Wilhelm noticed an old rune tile hasn't been replaced yet and reported it to the supervisor. The supervisor thought for a moment before telling Wilhelm to leave the tile as replacing it would delay the run. Wilhelm nodded and silently walked away.
The test run started and everything was going smoothly, the runes were working properly the engine was humming softly nothing out of place when suddenly the old rune tile started to glow brightly, it was melting due to overheating. The supervisor pressed the emergency stop button but it didn't work. Everyone panicked and started to stabilize the engine, one by one runes started to glow and melt slowly as the circuit was broken mana was flowing and accumulating in the runes instead of the container.
In a matter of 3 minutes the runes melted and the engine started to overheat. Before the lab could go under full lockdown the engine exploded. Waves of potent mana emerged from it ripping away everyone's soul. Wilhelm who was standing behind the enchanted glass was thrown back into the wall the time-turner he was wearing broke and the magical dust embedded itself into his skin. Wilhelms body went from an adult to a teen to a toddler and back in a matter of three seconds. In three seconds the mana wave has killed everything except Wilhelm who was stuck in a time loop.
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Wilhelm woke up, his body burned with visible bruises, it kept changing form turning him younger and older. Wilhelm realised he was stuck in a time loop he walked around the broken laboratory his team all dead the engine nothing but a pile of melted steel.
Taking out a healing potion from one of the drawers Wilhelm poured it on himself, it burned but slowly healed his body. Wilhem saw the aftermath of the explosion everyone at HelixTech was dead their body was nothing but piles of flesh with no soul.
He walked through the town everything from human to animal was dead he reached home hoping his parents to be alive his mind denied but his heart hoped from them to be save, but alas he was the only one who survived.
Wilhelm was devastated he saw the old rune tile he should have replaced it himself without reporting it to the supervisor. Now he was alone and he didn't know what to do. Wilhelm sat by a streetlight and cried it was all his fault he thought he could have stopped the explosion, he could have stopped all this form happening.
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Wilhelm searched for days for any sign of life he travelled the world to find anything anyone alive breathing.
After travelling for months Wilhelm finally stopped mourning, nothing's gonna change like this he needed to do something.
With Determination Wilhelm set himself on changing the fate he knew he could travel back in time all he needed to do was figure out how.
Returning back to the Arc Wilhelm made it his base he cleaned the school from the bodies and focused on one single task, going back in time.
Wilhelm looted the now ruined gringotts for magical devices which could help him. He even looted the Department of Mysteries.
Wilhelm worked hard and for 7 years he forgot what the world looked like, he barely slept, ate minimum just to keep himself alive.
Wilhelm mind had started to go unstable he didn't care about anything and even went on to experiment of dead bodies. He didn't care as long as he was able to go back in time he wont care of things like morality. Saving the world was all that mattered.
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Disclaimer:
I do not own Harry Potter or any of the original elements from the books, movies, or universe. All rights belong to J.K. Rowling and the respective creators. This is just a fanfiction made for fun. I'm not a professional author—just someone who had an idea and wanted to write it down. Please don't expect perfect grammar or writing, I'm doing my best and learning as I go.