"Brother, you came back. I was worried about you."
As soon as Genji and Ai returned to the front gates of the villa, a petite black-haired girl threw herself into the young man's arms.
Kaguya clung to him tightly, burying her face into his chest as he gently stroked her soft hair, like a doting older brother.
"No need to worry, little sister. No one out there can kill your brother," Genji replied with a confident smirk.
Kaguya pouted cutely, lips pursed. "But what if something did? The outside world is dangerous. There are zombies everywhere."
"You too, Hayasaka. I'm glad you're still safe." Kaguya gave a small, sincere smile to the blonde standing quietly beside them.
Ai Hayasaka nodded back wordlessly. They all walked inside the villa together, settling into the living room, acting like things were normal.
But Kaguya had no idea. She couldn't possibly know the truth, that while the world outside collapsed into chaos, her beloved brother hadn't been fighting to survive.
He'd been spending every damn moment fucking Ai. Not once or twice, but constantly.
Ravaging her body like a man possessed, using her as an outlet while others screamed and died in the distance.
To Kaguya, Genji was always gentle, always the polite and loving older brother. That's what she saw. That's what she believed.
She didn't see the version of him Ai saw, the twisted, obsessive monster who used his kindness as a mask, who whispered sweet lies with one breath and forced Ai to bend over with the next.
He used to be kind, once, just as sweet to her as he was to Kaguya.
But that kindness had died the day Ai rejected him, when she dared to show disgust at the hypocrisy she saw festering beneath his smile.
That rejection snapped something inside him. It twisted his love into something unrecognizable, something obsessive, violent, and all-consuming.
He never held back with Ai after that. Not physically. Not emotionally. In his mind, what he felt for her was real. Pure. So every time they were alone, he acted on it.
He'd corner her in a hallway, bend her over the table, shove her onto a couch, pin her to the bed and fuck her like an animal in heat.
He used her. Violated her. Loved her in the only way his sick mind understood.
Sometimes he'd dress it up in romance, like today, a "date" to the park that got interrupted by a zombie outbreak.
It didn't matter.
He'd make every memory with her his. Twisted or not.
Ai endured all of it, because she had no choice. Genji held every card. He knew her weaknesses, her fears, the things she wanted to protect.
And worse… she suspected this whole apocalypse might have been caused by him.
Something had changed in him, something unnatural, he was no longer just a boy. He was something else. Something powerful. Something unstoppable.
If she were just some ordinary girl, she'd have broken already, crying, begging, giving in.
But Ai still endured. She bit back the screams. She fought silently. Because in her heart, she believed there was still a way out. A place far away, beyond his reach.
She couldn't beat him. But she could run.
Until then, she played along. She let him use her body. She moaned when he wanted her to moan.
She smiled when he ordered her to smile. She spread her legs when he gave the signal. Rode his cock while silently praying for freedom.
She let him dump his twisted love and lust into her, day after day, all while praying that one day, she'd be free of her young master's clutches.
No matter how twisted his desire became, she endured it. Because if she didn't… there'd be nothing left.
And Genji? He didn't care. Whether it was love, hate, or fear, as long as Ai belonged to him, body and soul, that was all that mattered.
Then, Miss Kaguya suddenly spoke up, her voice light but curious. "Brother… are you already leveling up?"
"Don't worry, sister. I've already reached level ten." Genji grinned, full of smug satisfaction.
To prove his point, thunder cracked violently in the sky above. In the blink of an eye, lightning surged from his palm, slamming into the ground with brutal precision, scorching the surface beneath them.
Kaguya gasped, eyes wide with awe. "Thunder power... That's such a good superpower, brother. I hope when I reach level ten, I'll get something just as powerful."
"You will." Genji smirked, voice dripping with certainty.
She blushed at the compliment, a little smile twitching on her lips. Still, Kaguya shook her head. "I shouldn't be too overconfident. If I expect too much, I might just end up disappointed."
Only Ai knew the truth and she didn't say a word. She could tell Miss Kaguya didn't yet understand.
Genji hadn't hit level ten by grinding through zombies or killing dozens of survivors.
He only ran over three people who blocked his car.
That alone wasn't enough.
He got something. Something no one else did.
A cheat.
A powerful one.
It had to be connected to this entire apocalypse, maybe even tied to the origin of it.
After all, the thunder-type power system during the early days of the apocalypse wasn't just strong, it was downright a legit cheat code.
Even Zeus, the so-called King of the Gods in Olympus, relied almost entirely on lightning.
If the top dog in mythology used it, how could it be weak?
And she well knew this wasn't even the full extent of the young master's strength. He was only revealing what he wanted them to see.
As Ai kept silent and calculated, Genji simply smiled, calm and reassuring. "Even so, I'm still here, sister. Don't worry. No matter how bad it gets... I'll protect you."
"Brother…" Kaguya's heart melted.
She leaned against his arm like a kitten, her soft hair brushing against him as he gently caressed her head, stroking her like she was the most precious thing in the world.
Their bond was wholesome. Safe. Warm. The kind of closeness that looked perfect from the outside.
Totally unlike his relationship with Ai, which was brutal, toxic, and full of unspoken threats. It wasn't affection. It was domination.
The difference was clear: Kaguya adored him. She looked up to him like he was her hero, her protector, her entire world.
But Ai? Ai resisted. She questioned. She doubted him. That alone made her an enemy in his eyes.
That's why he was gentle to Kaguya. She stroked his ego, willingly. She treated him like a god, and so he acted like her guardian angel.
But Ai didn't.
And to Genji, anyone who didn't stroke his ego... didn't deserve kindness.
Ai, of course, understood this, at least on a subconscious level.
She realized that the more she pushed back, the more aggressive he became.
Her young master's biggest weakness wasn't a weapon or power level.
It was his ego.
If someone bruised it, he'd crush them without hesitation.
But if someone massaged it, fed it, played into it, he became gentler. Affectionate. Obsessively so.
Even if she plotted behind his back, even if her loyalty was fake, as long as she played the part and submitted to his pride, he'd keep loving her.
Twisted, possessive, messed-up love, but love all the same.
And she wasn't stupid. It worked in her favor.
Of course, deep down, she knew he probably saw through it. He had knowledge about this apocalypse no normal person should have.
If he could understand the rules of a dying world, there's no way her cheap little lies about "escaping his control" went unnoticed.
He was just pretending not to know.
And that made him even more dangerous.
While Ai was lost in her thoughts, Kaguya glanced up at her brother.
The moment she met his gaze, those warm, loving eyes, her own expression softened instinctively.
Reluctantly pulling away from his comforting embrace, she spoke gently. "Brother, let's go inside. I'll tell the cook to prepare something for you. You must be tired."
"Alright…" Genji said with a calm smile. "You can wait for us. I think we'll enjoy a good bath first."
"With Hayasaka?" Kaguya raised an eyebrow, glancing at Ai with a strange look.
Of course, the Shinomiya estate still functioned normally, even after the world went to hell. Their cook was still working, just like the bodyguards and armed men stationed around the villa.
Every one of them had been trained and brainwashed since childhood, loyal beyond reason to the Shinomiya Family.
So, even in an apocalypse infested with flesh-eating monsters, the estate remained a safe zone.
The chefs and maids went about their duties without fear, benefiting from the luxury of survival and the thrill of killing zombies from a distance while being protected like royalty.
Why would any of them risk going outside to fight and die, when life inside the villa was untouched, privileged, and backed by the strongest private army left in the world?
"Yes. With her," Genji replied bluntly, not even trying to hide it. "We've been together for a long time. But unfortunately, we had to keep it quiet. You know how Father and the older brothers are no tolerance for 'someone' beneath us."
He paused, then gave a sharp grin. "But now? They can't even take care of themselves. And I've got the strongest superpower everyone dreams of. I don't have to hide shit anymore."
Ai Hayasaka stood silent, showing no sign of embarrassment or disagreement.
Kaguya nodded slowly, her voice flat. "Congratulations on your relationship, then… Brother."
She said nothing else. Just turned away, sulking.
Genji didn't give a damn. He slid an arm around Ai's waist, grinning as he leaned closer. "Alright, Ai. Let's go. I need your service."
Ai followed him without a word as they entered the private bath.
Without hesitation, she stripped off her clothes, piece by piece, her skin glistening under the bathroom light.
Once she was completely bare, she turned to help the young master undress, pulling off every layer until he stood naked before her.
She adjusted the water, setting the temperature to freezing cold, just how he liked it.
But Genji wasn't known for patience.
Before she could even step aside, he grabbed her by the waist and slammed her back against the cold, tiled wall. His cock was already rock hard, and he didn't waste a second before shoving it deep into her soaked pussy in one smooth, brutal thrust.
She let out a sharp moan, high-pitched and echoing off the walls, mixing with the sound of cold water cascading down on them.
Ai knew exactly how he liked it, he wanted her loud. He wanted her moaning like a slut in heat, not holding anything back, moans soaked in lewdness and desperation.
He grabbed one of her legs, lifted it high, and pinned her tighter against the wall.
His hips slammed into her over and over, faster and harder, the wet slaps of skin-on-skin ringing out in the steamy bathroom.
Water poured over them, cold enough to sting, but neither of them cared.
Her grips tightened, her voice raw and needy, her moans turning louder with every savage thrust.
Genji didn't stop. He didn't slow down. He just kept using her. Just the way she wanted it. Just the way he owned her.