The next few days were a sleep-deprived blur. Makoto threw himself into work like a man possessed, fueled by cheap coffee and the metallic taste of energy drinks.
Extra shifts, freelance translation gigs, even helping a classmate with a soul-crushing capstone project. Every yen he earned was a sacrifice on the altar of his own perversion.
His entire life was now a frantic grind, all for a single, terrible purpose: funding the Klee cosplay.
Just as he was about to pass out on his keyboard, his phone buzzed. It was a rapid-fire assault.
Yuna: Big bro, I found the PERFECT Klee costume! It even comes with a little backpack and a Dodoco plushie! (◕‿◕✿)
[Link to an absurdly expensive custom cosplay store]
Yuna: Oh, and I already practiced the voice! 'Onii-chan, Klee wants candies... and maybe something else~?' (•͈ᴗ•͈)
Yuna: P.S. Don't work yourself to death. I need you alive for our special playdate~ (≧▽≦)
Yuna: P.P.S. If you pass out from exhaustion, I'm telling Mom you spent all your money on loli cosplay services. (¬‿¬)
He sighed, a long, weary sound of defeat. He transferred her 50,000 yen, a pitiful down payment on his own damnation.
Makoto: I'm fine. Cook me something and bring it to my room, please.
His phone buzzed instantly.
Yuna: 50k?! That's not even enough for the socks!! (╯°□°)╯︵ ┻━┻
Five minutes later, his door exploded inward. Yuna stood in the doorway, a vision of domestic chaos.
She was wearing an apron… and nothing else.
Her bare legs were long and slender, and the flimsy apron strings did little to hide the swell of her breasts. In her hands, she held a sad-looking cup of instant noodles with a single, lonely boiled egg floating in the broth.
"Here's your home-cooked meal, broke-ass big bro," she sang, plopping down onto his bed and almost spilling the broth on his comforter.
Her bare thigh pressed against his, the warmth a stark contrast to his own exhaustion.
She leaned in, her voice a conspiratorial whisper. "The real meal comes after you pay the other 50k... Klee's got a special bomb to show you."
She wiggled a Dodoco plushie that she had apparently smuggled under her apron. Its fluffy, cheerful face was marred by a suspicious, damp-looking stain.
Makoto took the noodles and started to slurp, the salty broth doing nothing to revive his spirits.
He eyed the plushie with a sense of dread. "What the hell did you do to that poor thing?"
Yuna giggled wickedly, rubbing the stained plushie against her bare nipple.
The sight sent a jolt of something hot and shameful through his tired body. "Oh, this? Klee was just... testing some new explosives."
She leaned in again, her breath hot against his ear. "Made with traveler's special... gunpowder."
He choked on his noodles. "Gross." And for some sick reason, he was getting hard again.
"What?" she asked, her expression a mask of perfect innocence. "Klee needed something sticky for her bombs!"
Her hand drifted down between her legs, her fingers disappearing beneath the apron. "Don't worry, big bro... I saved plenty more for our private demolition session."
She suddenly pressed the damp plushie against his face.
The scent was unmistakable. It was her. Musk, sweat, and the faint, sweet aroma of his own release mixed with hers from the other night. The smell of their own sin.
"Smell familiar?" she whispered.
"Nope, no idea what you're talking about," Makoto lied, his voice flat. He leaned back on the bed with a yawn, a desperate attempt to act like he didn't care.
"Go back to your room if you're done."
He was so tired. The exhaustion was a physical weight, pressing him down. "So tired… Wake me up in three hours, okay?"
He gently pulled the plushie from her hand, his fingers brushing against the damp spot. "This stays. It'll help me… get sleepy."
The lie was so thin it was transparent, but he didn't care. He just wanted to escape.
Yuna pouted, but her eyes sparkled with victory. "Fine, fine."
She stood up, letting her apron strings come undone as she stretched, giving him one last, breathtaking view of her naked body. "But if you're not up in three hours..."
She paused at the door, her voice dropping into that perfect, chilling Klee voice. "Klee will make a big boom boom to wake onii-chan up!"
Then her voice switched back to normal, laced with pure Yuna venom.
"And I will be taking Dodoco back if you get any funny ideas." She made an obscene hand gesture before giggling and slamming his door shut.
Just as he was drifting off, her voice echoed through the wall, a final, damning instruction.
"DON'T JIZZ ON MY DODOCO, PERVERT!"
Her maniacal laughter was the last thing he heard before the darkness of exhaustion finally claimed him.
He hugged the plushie, its forbidden scent pulling him into a sleep filled with twisted, shameful dreams.
Three hours later, his door creaked open. Yuna tiptoed in, wearing nothing but an oversized pajama shirt.
"Wakey wakey," she whispered, her eyes immediately landing on the stained Dodoco, still clutched against his face. Her eyes widened with a glee that was almost terrifying.
"OH MY GOD!" she squealed, jumping onto the bed with enough force to jolt him awake. "You actually did it! You slept with my cum-stained plushie!"
She tried to pry it from his sleepy grip, her laughter ringing in his ears. "That's so perverted, even for you!"
She leaned down, her pajama shirt gaping open to reveal her bare breasts, swinging like pendulums just inches from his face.
"So... did big bro have sweet dreams about little Klee?" Her voice dropped to that creepy, cloying childlike whisper. "Did onii-chan imagine exploding inside Klee's tiny body?"
"No idea what you mean," Makoto grunted, sitting up and rubbing the sleep from his eyes.
The plushie felt suddenly disgusting in his hands. "And take this back, it stinks."
He shoved it into her hands, the damp spot cold against his skin. "Thanks for waking me up."
Yuna hugged the plushie dramatically, sniffing it with exaggerated disgust. "Ugh! You're right, it DOES stink now!"
She stuck her tongue out at him. "Like cheap lotion and lies."
He swung his legs out of bed and walked back to his laptop. A desperate attempt to get away, to pretend things were normal. "Now go back to your room if you have nothing else to do."
Instead of leaving, she flopped onto his bed.
She spread her legs just enough to flash the dark shadow between her thighs under the oversized shirt. "Nope! I'm staying right here to supervise my broke big bro's work progress."
She pulled out her phone and, with a wicked grin, started playing Genshin at full volume while chanting Klee's voice lines.
"Boom boom bakudan! Boom boom bakudan!" She kicked her feet in the air like a spoiled child.
The shirt rode up higher with each kick, a blatant, tantalizing display of her soft ass. "Work faster! Klee needs her costume funds!"
Makoto gritted his teeth. The cheerful, high-pitched voice was pure torture.
"Geez, fine, do whatever you want then," he grumbled, turning his back to her and forcing his eyes onto the glowing screen.
He had a translation project due by midnight. He had to focus. He had to ignore the half-naked gremlin currently infesting his bed.
He managed to hold out for exactly thirty seconds before he could feel her getting bored behind him.
She rolled onto her stomach, propping her chin in her hands as her legs kicked lazily. The oversized shirt rode up completely now, fully exposing her bare, perfectly-formed ass to him.
"Booooooring," she whined. She reached over, her finger poking his cheek repeatedly.
Poke. Poke. Poke. "Onii-chan, let's play! I'll even give you a preview."
Suddenly, her voice dropped into that perfect Klee impression. "Klee found a secret treasure! Wanna see?"
Before he could react, she flipped onto her back. Her legs spread wide, the Dodoco plushie now sitting right over her bare pussy like some kind of twisted offering.
"It goes..." she whispered, her voice pure, innocent Klee, "...BOOM BOOM!"
That was it. He snapped. The exhaustion, the blackmail, the constant, relentless teasing... it all blew up.
"LET. ME. WORK," he growled, the sound ripped from his throat.
He spun around, scooped her wriggling form off the bed, and dumped her onto his lap. Without thinking, he smacked her bare ass. Hard. Twice.
The sound was sharp in the quiet room. "Or go back to your room, you bratty stepsis."
SMACK. SMACK.
Yuna let out a theatrical yelp, a squeal of fake pain as she wriggled in his lap. "OW! Mean big bro!"
She rubbed her reddening ass with one hand, her other still clutching the Dodoco plushie like a shield.
Then, she went completely still. Her breath hitched. Makoto felt something warm and wet seep through his sweatpants, spreading against his thigh.
"O-oh..." she whimpered, her face flushing a deep, furious crimson.
Her voice, when she spoke, was small and shaky, all traces of Klee or the bratty stepsister gone. "T-that... actually felt... kinda good..."
The admission hung in the air, a raw, unexpected confession that shattered the dynamic between them.
The bratty act, the calculated seduction, it all evaporated in an instant, leaving something far more vulnerable and dangerous in its place.
Yuna scrambled off his lap like a startled cat, the Dodoco plushie falling to the floor to reveal her glistening, now-exposed pussy under the bunched-up shirt.
The evidence of her arousal was undeniable.
"I-I'm going now! Pervert!" she shrieked, the words a flimsy, reflexive defense.
But she hesitated at the door, her hand on the knob, her back still to him. She bit her lip, a flicker of uncertainty in her posture.
"...Do that again next time," she muttered, her voice so quiet he almost missed it, "...and maybe I'll give you a discount..."
Then she was gone, slamming the door behind her.
The room was suddenly, unnervingly silent.
The only evidence of her chaotic presence was the faint, musky scent of her arousal and the suspiciously damp Dodoco plushie lying abandoned on the floor.
Makoto stared at it, his heart hammering against his ribs. He looked down at the wet spot on his sweatpants, then at his own hand, the one that had delivered the spanks.
He had just stumbled upon a new, terrible weakness. And he had a sinking feeling she had, too.