Sona had had enough of her sister's antics. With a deep breath, she switched the topic—fast.
"Big sis, what are you even doing here in the human world? Isn't the Underworld overflowing with official business?"
Serafall twirled her wand, eyes sparkling. "Hehe! The three-way summit between Devils, Angels, and Fallen Angels is about to kick off, right? I'm in charge of Underworld diplomacy, so of course I have to be here for the negotiations!"
She leaned in, voice dropping to a playful whine.
"So for the next little while, I'll be staying right here in Kuoh Town. Which means—Sona-chan and I get to live together!"
"Absolutely not!" Sona shot up, nearly knocking over her chair. "You can't move in with me, Sis. I'll find you somewhere else to stay!"
Just imagining Serafall's chaos in her daily life made Sona's scalp tingle.
Serafall just winked. "Too late! I already know exactly where Sona-chan lives."
Shuo, sensing disaster, decided to intervene.
"Hmm… My house is already packed to the rafters, and the expansion isn't finished yet. Serafall, where would you even sleep?"
Serafall's eyes narrowed. "Wait. Are you saying you live with Sona-chan?"
Shuo nodded, stroking his chin with mock seriousness.
"Yep. Not just Sona—the whole Student Council, Rias, and her crew. So, which room would you like?"
Serafall's jaw dropped. She looked like she'd just witnessed a puppy theft in progress. Her aura flared, and she hissed, "You—you thieving human! How dare you steal my precious Sona-chan!"
Shuo just stared, expression blank. This was next-level sister complex.
Sona quickly stepped between them, hands raised. "Sis, enough! If you keep this up, I'll actually get mad!"
Serafall froze, thunderstruck. Then, in classic drama queen fashion, she scampered to a shady corner, crouched down, and started tracing circles in the dirt with her finger, sniffling.
"Waaah… Sona-chan's angry at me over a guy… She doesn't want her big sister anymore…"
The Student Council exchanged glances. Shuo just sighed. "Alright, let me handle the Maou."
Sona blinked. "You…?"
"Trust me. I've got this."
Shuo walked over to Serafall, who perked up at the sound of footsteps—then pouted when she saw it was him.
"Hmph! Did you come here just to rub it in?"
He crouched down, matching her posture.
"Serafall, Sona was just upset. She's still your adorable little sister, isn't she? Look—she's watching you right now, worried sick."
Serafall peeked over her shoulder. Sure enough, Sona was biting her lip, eyes full of concern.
Serafall bounced to her feet, pride restored. "See? I knew it! Sona-chan loves me most!"
Shuo nodded enthusiastically. "Absolutely! No one compares to Serafall-sama. Sona's number one fan is you."
Serafall puffed up, basking in the praise—then switched gears.
"Of course! But don't think you can steal Sona-chan from me, no matter how much you flatter me!"
Shuo put on his best respectful face. "Who would dare compete with Serafall-sama for Sona? I wouldn't dream of it."
Internally, though, he was plotting.
Just wait, Serafall. Once this mission's done, not only will Sona be mine, but you—cosplay queen Maou—will be wrapped around my finger too.
He flashed a mysterious grin. "By the way, I heard you love magical girl costumes. I happen to have a little something—an exquisite magical girl outfit, just for you! I bet you'll adore it."
Serafall froze, then lit up like a Christmas tree.
"Really? You're actually giving me a magical girl present? Well… I suppose I could accept it!"
With a flourish, Shuo produced the costume. Serafall's eyes went wide; she snatched it up, fingers trembling with excitement.
"Oh wow! I've never seen anything this gorgeous before!"
She squeezed Shuo's hand. "You're not so bad after all, giving me such a perfect gift."
She paused, then added—"And since you saved Sona-chan once, maybe I'll let you have half of her! Generous, right?"
Shuo's brain short-circuited. Wasn't she supposed to be the ultimate sis-con? One magical girl costume and she's ready to split Sona like a birthday cake?
He glanced at Sona, who had just walked over—only to catch her sister's "split custody" offer. Her face darkened, teeth clenched.
Half? I'm not a dessert you can share!
Shuo recovered quickly, pressing his advantage.
"Hehe, Serafall-sama, why don't you try on the outfit now? I'll snap a few photos, maybe record a video. Heck, we could even launch a magical girl TV show starring you!"
He leaned in, voice conspiratorial.
"We'll post the pictures online, broadcast your magical girl adventures on TV. The whole world will see just how cute and beautiful you are. Even the gods and devils across the three realms will agree—Serafall-sama is the fairest of them all. Prettier than Gabriel herself!"
He watched Serafall's eyes glaze over with delight.
So, Maou—are you tempted yet?
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