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English
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Part 4 of CROSSOVER AU'S BY COSMIC
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Published:
2023-07-23
Updated:
2025-10-20
Words:
85,943
Chapters:
39/?
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721
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The One Who Will Inherit The Dark, And The Choice He Will Make

Summary:

On August 11th 2199 a total solar eclipse appeared in the sky over Europe.

On August 11th 2199 a great hero defeated and truly destroyed the evil that had plagued the world for a millennia, fulfilling a prophecy mad centuries beforehand however this same prophecy stated that the great evil would soon return in a new form.

On July 15th 2217 that great evil regained its form.

On December 11th 2234 A total solar eclipse appeared in the sky over Japan

On December 11th 2234 that great evil regained its power.

Now, the one who was chosen to hold that power within himself has a choice to make.

Allow the power to consume him, and destroy the world that has constantly beat him down as he curses god with his every waking breath.

Or

control it, Harness it, and use it to achieve the dream he had chased after for so, so long.

This is the choice one man must make, This is the choice the reincarnation of Dracula must make, This is the choice that will decide the fate of the world and the billions who live upon it.

I made a playlist of songs I listen to while writing this, take a listen if you want: https://open.spotify.com/playlist/3oAiGmAjaXhpZy7877fvxQ?si=8021ec5396cb4fec

Notes:

My second crossover fic for MHA, this time with one of my favorite game series of all time, Castlevania! If you've read my other MHA fic don't worry I'm still working on it I'll just be switching from that one to this one after every chapter so I'll update that one then this one then so on and so forth!

(See the end of the work for more notes.)

Chapter 1: A Job Offer

Chapter Text

Izuku quietly slipped from his classroom as the last bell rang, careful to avoid a certain blonde and his gang as he sticked to the shadows and slipped from sight.

 

Soon the green haired young man was concealed in the darkness and slipping between the shadows with ease, no one seeing him despite his vibrant green hair.

 

Finally he arrived at his goal.

 

The gate that lead away from the horrible torture of his school.

 

But alas, the one person he had gone to the greatest lengths to avoid was already standing in his path.

 

Bakugou Katsuki or as Izuku once called him Kachan.

 

“Hey there nerd!” The blonde shouted cruelly.

 

“Bakugou.” Izuku whispered in despair.

 

“Are you trying to make a break for it? But me and you still haven’t had our daily “Talk” yet?” Bakugou stated in mock offense before grabbing the Greenette by the collar, small explosions popping off in his hand as he smiled evilly.

 

However, before the situation could deteriorate any further, a voice called out to the Greenette

 

“Oh, Midoriya! Fancy seeing you here!”

 

“Mr. Arikado!” Izuku thankfully muttered.

 

“Tch, saved by the bread man. Don’t worry, when we get back from winter break our next “Talk” will just have to be double its usual length.” Bakugou threatened as he let go of Izuku’s collar and turned away from the Greenette.

 

After a moment a man walked over to where Midoriya was standing at the gate that led away from the school.

 

“I see that boy is still giving you troubles Midoriya.” the man whispered to Izuku.

 

“Yeah…” was all Izuku muttered in response, his head hung low.

 

“”*Sigh* Come with me Midoriya, you are my newest hire.” the man stated.

 

“W-what!?” The Greenette exclaimed in shock as he looked at the man.

 

He had black and silver hair, a face that hovered on the fine line between youthful and aged with kind and ancient eyes, he wore a crisp black suit alongside a stormcloud gray vest, a black dress shirt, and a black tie with a red handkerchief in his coat pocket, held in one hand was a black cane with a golden handle and tip, wrapped up in his other arm was a massive and steaming bag of freshly cooked bread.

 

“I said that I wish to hire you. Is your hearing already going bad at such a young age?” The man asked with a slight tilt of his head.

 

“N-no I heard you I just don’t understand why you would want to hire me Mr. Arikado?” Izuku responded in a panic.

 

The man sighed before tossing his cane upwards and grabbing it by its tip in the air before lightly tapping Izuku on the head with the handle.

 

“I’ve already told you nearly a dozen times by now Midoriya! Call me Genya, GEN-YA, G-E-N-Y-A, Genya! Heavens you are bullheaded!” The man named Genya exclaimed to Izuku, emphasizing his point by tapping his cane on Izuku’s head with each word.

 

Genya then returned his cane to its proper place in his hand before answering the question Izuku posed him.

 

“As for why I wish to hire you, I have seen first hand how impressive your analytical capabilities are, not to mention that you can easily memorize vast sums of information easily, which in my line of work is extremely useful, quite honestly if it wasn’t for your horrendous social skills most companies would be quite literally chomping at the bit to hire you as an intern, if you would ever show people your skills that is.” Genya stated.

 

It was also at this moment that the doors of the school opened and the massive quantity of students housed within began to pour forth like a tsunami.

 

“Now then Midoriya, the clock is ticking, will you accept my offer?” Genya asked the Greenette.

 

“Let me call my mom and tell her I’m going to be late getting home.” was all Izuku said to the well dressed man.

 

“Good! Now grab half of this bread! It's your gift as a new hire!” Genya stated.

 

“O-oh thank you! But if you don’t mind me asking what would you have done with all of this If I hadn’t accepted your offer?” Izuku asked.

 

“Ate it all as I bemoaned the loss of a prospective new hire.” Genya answered dramatically as he began to walk, Izuku trailing close behind him.

 

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

 

“Here we are!” Genya stated as he led his new subordinate to where he would be doing his work.

 

A decently sized room inside an office building next to the local shrine, inside of which sat a dozen servers.

 

“Welcome to where the magic happens Midoriya!” Genya stated with a wave of his cane.

 

“I-i see, if you don’t mind me asking Mr. Genya, what is all of this for?” Izuku timidly asked.

 

“I guess you could call it a government funded weather forecast system of sorts, your job here is to acquire the data received by the antenna around the shrine, input it into the servers, examine it, and report any anomalies to me, in fact since you are starting tomorrow allow me to get you a map of the shrine so you’ll know where the antenna are and a key of what Data you will need to look out for. Until then familiarize yourself with the system. I believe in you Midoriya!” Genya told the Greenette as he walked out of the room, leaving him alone with one of the few things he is completely comfortable with.

 

Cold, hard, unfeeling, data.

 

“*Sigh* I’m glad you have so much faith in me Mr. Genya, but I know that there are people who would be far better at this than a quirkless loser like me.” Izuku said aloud as he reached into his bag and grabbed his phone and his pair of green and black wireless headphones.

 

He placed the headphones on his head and waited for them to connect to his phone.

 

As soon as they did he immediately went to his music app and scrolled to his own personally curated playlist and clicked on the song at the top of the queue.

 

Izuku laced his fingers together before pushing outwards, popping and cracking his knuckles as he walked to the large terminal connected to all of the servers.

 

“Now then, let's see what I’m working with here.” Izuku muttered to himself as the song well and truly began.

 

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

 

“Are you sure about this Genya?” a blonde woman asked as she looked at the monitor and the image it showed.

 

A young man with green hair, wearing a black school uniform, and a pair of green and black headphones, typing away at the terminal in front of him.

 

“I would say I am 75% sure Yoko, and I am deeply praying that the 25% margin of error is where Midoriya lands.” Genya stated as he nervously rubbed the handle of his cane between his fingers.

 

“Hmm, well then I hope you're wrong then too.” Yoko stated with a quick glance to her friend before returning her eyes to the screen before her.

 

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

 

A man wearing a white suit sat at a small cafe, a newspaper next to him on the table.

 

“Tomorrow… I’ll finally claim my birthright, no matter who dares to stand in my way.” The man whispered sinisterly as he sipped from a cup of coffee.

 

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

 

A well dressed older European man with brown hair hopped off the back of a truck before grabbing his bag.

 

“Thank you kindly good sir!” The man exclaimed as he placed a small sum of money into his driver’s hands.

 

“I know it's not much but this should cover any expenses this small trip has caused you, I am terribly sorry for any inconvenience and once more I thank you for lending me aid.” The man told the driver.

 

“I was actually heading this way on business anyways so it’s not really a problem.” The driver told the man.

 

“Oh really? Might I ask what your business is?” The man asked.

 

“Demolition, oh and my name’s Hammer, a pleasure to meet you mister…?” Hammer asked.

 

“J.” J responded.

 

“That’s an interesting name you’ve got there Mister J, mind if I ask what you're doing all the way out here?” Hammer asked J.

 

“Business, same as you.” J responded.

 

“Then do you mind me asking what your business is?” Hammer asked.

 

“Demolition, same as you my good sir!” J exclaimed.

 

“Really!? Heh, well maybe me and you will get put on the same job then!” Hammer exclaimed happily with a laugh.

 

“Maybe we will! That would certainly be a twist of fate would it not?” J asked Hammer.

 

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

 

A young woman with hair like vines swept the stone ground of the shrine before briefly stopping to turn her face to the sky.

 

“I do hope that our preparations will be complete before tomorrow's festivities begin.” The young woman worried.

 

“Calm down Ibara! As long as we continue to do our best work we’ll be done soon enough! Then all we’ll have left to do is guide that new hire Mr. Arikado said he would be bringing in today!” a young woman with black hair told Ibara from the deck of the shrine as she closely looked over the beams of the shrine.

 

“If anything I should be the one telling you to calm down Momo! You’ve already searched the shrine from top to bottom a dozen times over for anything that could be wrong with it!” Ibara exclaimed.

 

“We may be volunteers but that’s no reason for us to not do our best work, Ibara!” Momo shot back.

 

“Momo, there's a difference between doing your best work and obsessing over something!” Ibara told her friend with a shake of her head

 

 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

 

“Oh? Well then, how interesting! It seems that our new lord will soon arrive! I do hope that everyone is ready for tomorrow's festivities?” a being wrapped in purple robes exclaimed in evil joy as he struck the clock tower behind him with the blade of his scythe, stopping the hands of the clock.

 

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

 

Izuku suddenly sneezed as he finished familiarizing himself with the incredibly complicated system before him.

 

“*Sniff* Is someone talking about me? Well whatever it’s about it can’t be anything good so no use in thinking about it.” Izuku mumbled under his breath.