"So, what exactly do you want me to do?"
Yoru wasn't surprised that Sona had told her sister he was her familiar. After all, he had been indebted to her in that regard.
As a member of Rias' peerage, he was basking in the limelight of the Underworld, and Rias had gained a lot of fame because of him. Logically speaking, the honor that belonged to Rias should have equally belonged to Sona, but she never raised any objections and simply accepted everything quietly.
"Hmph! I don't care. I want you to announce it to the entire Underworld—that you're actually my Sona's familiar!"
"That might not be a good idea. It's true that I'm Sona's familiar, but I'm also Rias' familiar. Do you really want my identity, a soldier reincarnated using eleven Evil Pieces, to become public knowledge?"
"I don't care! You have to give my little Sona an explanation! I won't let her suffer this grievance for nothing!"
Serafall spoke with a look that suggested she was about to burst into tears. Her beautiful wine-red eyes shimmered with moisture.
Yoru felt a headache coming on. Is this really Serafall Leviathan, one of the Four Great Satans? Acting all cutesy, playing dumb, and now putting on the poor-little-girl act? What kind of nonsense was this?
"Please maintain your dignity. You're Serafall Leviathan, one of the Four Great Satans. Doing this puts someone like me, a mere soldier, in a very awkward position."
Hearing Yoru's words, Serafall shuffled a few steps back, a pitiful expression spreading across her face.
"Nope, I refuse! I'm not some Leviathan or whatever. I'm Magical Girl Milky-chan right now!"
Yoru couldn't help but palm his forehead. This version of Serafall left him speechless. Honestly, he'd prefer if she just acted like a proper Satan and gave him a good scolding. That might be easier to deal with.
"Waaaah! So mean… You bullied my Sona and now you're bullying me too!"
As Yoru looked at her blankly, Serafall shrank back pitifully and—shockingly—actually began to cry.
"Lady Leviathan, please be mindful of your position. Even pretending to cry like this isn't appropriate in a place like this."
"Uyaa~! You saw through it? Heehee~"
There wasn't a single tear in her eyes. The once heartbroken expression instantly brightened. But what no one noticed was that a subtle trace of sadness flickered in those wine-red eyes.
Sona had only told her about Yoru being her familiar. But as one of the Four Great Satans, how could Serafall not realize… that her younger sister was no longer a virgin?
Raging with both anger and shock as she tried to figure out who had taken her sister's purity, Serafall pieced things together once Sona brought up Yoru.
If this soldier had been just any ordinary demon—even as a member of Rias' peerage, even as an Eight-Piece reincarnated devil, even as a Sacred Gear wielder—Serafall would have definitely killed him.
But…
After hearing Sona's explanation and learning that this man was a reincarnated devil born of eleven Evil Pieces, Serafall fell silent.
Though she was known as a doting older sister and the Underworld's most infamous siscon, she was also Serafall Leviathan—one of the Four Great Satans.
She might seem silly and carefree, but to sit on that throne for so many years, it wasn't just her strength that earned her respect.
Strength was a part of it, but what truly made a great Satan was someone who thought of the entire Underworld—someone who contributed to its future.
Once she understood Yoru's identity, Serafall could no longer speak. A being reborn with eleven Evil Pieces—there weren't words like "genius" grand enough to describe such a person.
Greatness. It was the same term Rias had once used when speaking to Grayfia about Yoru. And it wasn't an exaggeration.
If devils were to ever rise above angels and fallen angels to rule the world, it would be under the leadership of this man.
That is... if he manages to fully grow into his potential!
A devil born of eleven Evil Pieces—how terrifying could such a being become? Even Serafall couldn't help but feel a bit of anticipation.
In comparison, the fact that this man had taken Sona's virginity seemed insignificant. In fact, wasn't someone like him exactly the kind of man worthy of her sister?
And if Sona truly liked him, then as her sister… did she even have the right to object? All she could do was silently offer her blessing… right? But she couldn't accept that! No matter what, it still didn't sit right with her!
Yoru looked with a hint of resignation at Serafall, who was now lying on top of him. Her expressions had been shifting nonstop since earlier—what on earth was she thinking?
"I guess… I guess I really should just kill you!"
After a long silence, just as Yoru was considering how to politely ask the Leviathan to get off of him, Serafall suddenly gave him a twisted smile and muttered words that made his scalp go numb.
What the hell!? She was just acting all cute a second ago, and now she suddenly wants to kill me!?
"Sister, have you had enough already?!"
Wearing her Kuoh Academy uniform again, Sona appeared behind the two with a furious expression, staring at her sister.
"W-Wait, Sona-chan, please let me explain! It's not what you think! Don't hate your big sister!"
Seeing Sona looking so serious, Serafall quickly turned around in a panic. Tears welled up in her eyes again—this time they seemed real. She looked like she might genuinely cry.
But in her panic, Serafall forgot she was still grabbing Yoru's collar. When she turned, she lost her balance, and the two of them clumsily toppled to the floor.
"Eek!"
That was the only sound Serafall managed to make before her words were completely silenced.
Sona, standing nearby, stared wide-eyed in disbelief. The two had fallen in such a way that Yoru was now lying on top of Serafall—and their lips had landed directly against each other.
"S-Sister, please calm down! Th-this isn't Yoru's fault, right?!"
Seeing her sister's trembling body and tightly clenched fists, Sona spoke quickly, fearing that Serafall might lose control and do something drastic in a fit of rage.
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