Thermal Expansion!

"I saw that nude pic of Chad and yourself… I took those photos, so of course they are good, but let's be real. It's nothing… nothing… compared to my glorious, hand-curated shrine of nude K-pop goddesses and idols, each photo a divine masterpiece bathed in ethereal glow and unattainable perfection!"

He blew a kiss to each girl on his walls, then strutted over to the poster of Momo—Momo the singer, not that cursed internet image—and planted a kiss right between her legs.

Kerry, brimming with confidence, sneered, "Oh, is that fucking so? You actually think I've got nothing better than you? God, how silly… how fucking clueless… your stupid ass is. Your eyes aren't even close to ready for what I'm about to show you."

"You don't have anything... I've seen every nude scene in every anime ever created... I've seen every hentai and ecchi out there!! You've got nothing. I've already seen every celebrity and K-pop star I've ever wanted to see naked... you've got nothing."

"Alright then. If you're so sure of yourself, here's the fucking deal: if there's even a hint of an erection when I show you what's on my phone, you lose...and I officially win this game."

"I'm not going to get an erection looking at anything you have."

"Okay, Mister Confident, here's the fucking challenge: I'm gonna show you a couple of really... REALLY FUCKING SEXY… pictures of a certain individual on my phone. Maybe it's a celebrity, maybe it's an anime girl, maybe it's someone from Brightwater Academy... I'm not telling you ANYTHING. But after you see the photos… if your dick even so much as twitches… Kerry wins again, and you can do the fucking walk of shame or something."

He got a bit worried, then anxious, then excited about what she was about to show him... and then worried again. He needed to summon the willpower to beat his sister. He'd never beaten her in a challenge or a game or gotten a single one-up on her—but this time, he was prepared to win.

What could she possibly have on her phone?

Of course!! She must have found Miss Vespera's OnlyFans account... there was nothing else it could be.

"Bishop laughed. 'If you're just gonna show us our teacher's Miss Vespera OnlyFans page—sorry to tell you, Little K, but the whole of Brightwater Academy's already seen it. I even ask for homework help through her DMs on there.'" He let out a laugh.

Kerry let out a wicked laugh. "Nope. It's way sexier… way fucking hotter… than that. And since I know you're a lying little shit who'd pretend he didn't get an erection, I'm taking precautions. Your lips may lie…"

She strode forward without hesitation, yanked down his trousers—and his boxers in one go—exposing his soft cock and balls right there in front of her.

"…but your dick can't lie."

Bishop's face burnt crimson, a mix of shock, humiliation, and raw panic surging through him. "What the actual fuck, Kerry?!" he yelped, fumbling to cover himself, but his hands were too slow, his brain too scrambled.

Each time he tried to cover up, she swatted his hands away, then shoved her phone in his face—displaying a fully nude person.

She laughed... "You were such a lying little shit… You said you'd grown and matured." With a swift flick of her finger on the top of his dick, she added, "If anything, you've shrunk."

He stammered, "You… you don't get how dicks work. They shrink when you see something unattractive, and they grow when you see something that's hot. It's just human nature."

Kerry nodded, then froze as his words sank in—he'd just called her unattractive. Her eyes narrowed, and with a swift, vengeful motion, she delivered a stinging smack to his dick again.

Any touch to the dick acts like a buff, sparking arousal—but only if the guy finds the person doing it at least a 4 out of 10 on the sexiness scale. And he definitely doesn't find his sister hot—she basically looks like Bishop, with long hair, bushy eyebrows, big eyelashes, boobs, and all that. Other than that, she's like his twin.

It's kind of like in any RPG, like Persona 5. If a girl's hot enough, her touch triggers "Passion Spike", boosting his arousal stat by +40% with a glowing aura.

But if she's not, the dick gets a "Flop Debuff", shrinking with a -20% morale penalty. And right now? He sure as hell doesn't feel any buffs.

Kerry said, "Now let's see how your dick reacts to this little sexy beauty."

Bishop had seen countless naked women online—huge tits, perfect butts, nothing new. This one wouldn't be special.

Then he saw the photo on her phone.

He was wrong.

The girl was a goddess incarnate. Her breasts were sublime—plump, perfectly lifted, their soft curves framed by a teasing hand. Her skin shimmered like molten gold, every line radiant. Her hips swelled into an arse so lush, so exquisitely sculpted, it begged devotion. Her thighs, silken and firm, parted just enough to tease a flawless pussy, its allure a pulse of raw desire.

Other women—K-pop idols and anime girls—had crafted bodies, but hers was a miracle. Her voluptuous breasts, her carelessly sexy, messy hair, her gravity-defying arse, and glowing skin eclipsed any fantasy. The tantalising shadow between her thighs and her hypnotic hips wove a spell, making every other nude feel lifeless by comparison.

"THERMAL EXPANSION!" he bellowed, channelling the intensity of a pilot facing an Angel's core overload, oblivious to the absurdity of his words.