(Bonus Chapter)
It's not a secret that Serafall Leviathan is a crazy fan of Magical Girl stuff. She had always been dying to become a true Magical Girl or whatever. However, not even being a literal Satan can fulfill her wish.
On another typical day, Serafall went to Kuoh to snoop around after her sister, Sona, informed that Asia was finally attending class again, which meant the unknown god had returned.
When the Satans heard about this information, they and especially Ajuka suggested they continue their observation and investigation. Serafall took the opportunity and immediately volunteered herself to do it. With that, Serafall is now wandering the town of Kuoh.
"Tch! Where is he? Suddenly it disappeared without notice and now doesn't even bother to contact me again…" Serafall, biting down at her nails, looking like a drug addict running out of her drug and now nervously paced around at the park, expecting for someone to arrive it seems.
After a while, someone did come as Serafall heard the sound of footsteps and sensed the presence of the arriving person. She immediately lifts her head and looks at the direction the person is coming.
"Miss Ravel!" Serafall hurried and almost pounced on Ravel but she stopped in time and stopped on her track just in front of Ravel who looked at her with an impassive glance.
"Serafall Leviathan. I assume you want the usual too for this time?"
"Yes!" Serafall replied a little too excitedly and took out a cylindrical object that looked like a battery and handed it over to Ravel who took it and gave Serafall an identical looking object.
Upon receiving the object, Serafall immediately took out her usual pink magic stick and slot in the object which turned out to be a battery after all.
Then, Serafall makes weird gestures and poses before the magic stick glows up and transforms Serafall into a magical girl.
"Ah~ Feel good to be a real magical girl again." Serafall sighed happily.
Ravel, who had been watching nearby, looked at what the once proud Satan had become an addict basically and sighed as anyone that unfortunately caught his attention would suffer a similar fate.
To explain what is happening, she has to explain what happened a month ago.
A month ago, Serafall was assigned with the task of investigating Ray. So, she had been constantly roaming Kuoh days and nights looking for him. But unfortunately for her, unless he wanted to meet her, the chance of her accidentally stumbling upon Ray is zero.
Ravel was the one accompanying him that time. So, she knows everything that happened that day.
That day Ray was bored and decided to have fun as usual. He was looking for a victim when Serafall seemingly presented herself by accidentally stumbling upon him in an empty alley while he was looking for a Stray Devil to play with.
Then, Ravel saw the eyes of her master brighten and his pupil widen with a grin that hides his sadistic glees. As if a child looking at a new toy falling on their lap.
"You!" Serafall arrived and skidd to a halt with gasps and deep breaths as if she just ran a great distance before she lifted to point her finger at him. "You are the magical familiar that can make magical girls, right?!"
His grin threatened to grow wider but he controlled his facial expression which turned into a polite smile as he looked back at Serafall, acting innocent and confused.
"Me? I'm just a talking black cat. I don't know what you are talking about." Ray shrugs but Serafall is having none of it.
"It's useless to pretend because I know the truth! I saw you and that Sirin girl that transformed into a magical girl to kill a Stray Devil! I know about the truth. So…" Serafall paused for a moment and immediately clasp her hands and bowed her head. "Please make me into a magical girl too! I want to become a true Magical Girl and fight evil to save the world too!" She begged which surprised Ravel but Ray simply smiled knowingly.
"Hmn. I can feel your feelings are sincere." Ray said with a thoughtful look.
"Then!" Serafall is about to say something but Ray interrupts her with his words. "But! Being a magical girl isn't easy and to get this power, you have to make a small sacrifice."
"Oh! Oh! I know! This is the part where we forge a contract or something, right? And I have to offer my soul or something, right? Then sign me up! I'll do anything to be a True Magical Girl!" Serafall declared proudly and took out a pink magical stick out of nowhere. "This is my conviction!" She declared.
"I see. Then, let us forge the contract and make you a real Magical Girl." Ray said and produced a magical contract, a gemstone and battery.
"Alright! Where do I sign? Or should I use my blood instead?" Serafall said, which made Ray frown a little in surprise which lasted a brief moment only.
Ray did use a beguiling kind of magic on Serafall to make her lower her wariness. But he didn't expect she agreed that fucking easily for a chance to be a Magical Girl. Not the first time this happens as he once turned Mil-tan and his gang of macho friends into real magical girls with transformations that transcend gender temporarily in exchange for helping him dealing with Issei's pervert friends with the mentally scarring nightmare of being raped by bunch of buff man in magical girl cosplay.
Anyway, after Serafall signed the magic contact, it burst into flames. But honestly, it's not real. Just a flair to make this look legit as the real kicker is the batter that he will give her to access her 'Magical Girl' power which in truth is mental poison that slowly and subtly turns her into his slave. But at this point, even if he didn't lower her intellect and give her the offer with full explanation of the consequences, he doubts Serafall will bat an eye and agree to this arrangement regardless.
Since then, Serafall gets her Magical Girl power, unaware Ray is pulling Kyubey level shit under her nose. Not that she cares, and she is now slowly being corrupted.
Back to the present.
"Don't forget the payment." Ravel reminds the now rejuvenated Serafall.
"Oh! Right. I almost forgot. But don't worry because I had it here. Tada!" Serafall took a rectangular box out and handed it to Ravel before she started explaining.
"She is a Vapula, a descendant of distant household members. Also, she is a virgin. So I can assure the offering this time is high quality since it's hard to find virgin pure blood Devils." Serafall introduced. Meanwhile, Ravel opens the luxurious box to reveal a still beating heart, sealed by magic to preserve its freshness.
Ravel looks back at Serafall who is basically a devout cultist at this point, eager to arrange 'accidents' to harvest pureblood Devil's heart as offering to keep using her magical girl power.
"This… should last for a month, right?" Serafall asked worriedly. However, Ravel didn't give an immediate answer which worried her.
Then, as she expected. Ravel does have something to say. "No. You are now required to pay double the rate as he decrees." Ravel said. Which caused Serafall's heart to sink.
"T… T-Two offering each week?" Serafall asks shakily as she immediately looks worried and bites her nails as killing one Devil each month is already difficult and she is still on the loose thanks to her status as Satan which ward off any suspicion on her.
"Or…" Ravel continues.
"Or what?" Serafall immediately looks excited, thinking there is a better alternative.
"You are given two other choices. Either you could sacrifice one of your parents as an offering that lasts for an entire year. Or you could sacrifice your beloved sister, Sona Sitri, to gain power permanently." Ravel said before she turned around and walked away because obviously, Serafall needed her time to get an answer.
Although, the choice is very obvious. Either she stalls for time or gains it permanently in exchange for the person she loved the most. This is a test after all, a test to see what she loved the most, the magical girl power or her own sister. It's interesting to see her choice when her siscon tendency and love for magical girls is in equilibrium.
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