"I-I don't wanna see your... thing!" Makoto yelped, slapping his hands over his face. He couldn't help but peek through a tiny gap between his fingers.
He had to steer this conversation somewhere, anywhere else. "And why do you shave it anyway? For bikini or cosplay?"
The question was a pathetic attempt to make this seem normal, like her nudity was just a practical choice for a hobby.
"Rude!" Yuna pouted, but the mischievous glint in her eyes only got brighter.
She slid off his back and stood beside him, hands on her hips, radiating pure confidence. "I shave because it feels nice. And it looks pretty!"
Then, without any shame at all, she spun around and dropped her shorts to her ankles. Her gray twin-tails bounced as she gave her ass a little wiggle.
"See?" she announced. "No bush means no distractions when I'm cosplaying!"
Makoto's brain felt like it was frying. Before he could even process the view, she turned back and leaned right over his face.
Her big, heavy breasts dangled inches from his nose, swaying with the movement. A fresh wave of heat washed over him.
"Speaking of which..." She bit her lower lip, giving her chest a little jiggle that was definitely not an accident.
"I really need some money for my new Ganyu costume." Her eyes locked with his. "Still sure you don't want that happy ending?"
Ganyu, the name, was an anchor. A flimsy piece of wood in a sea of insanity, but he grabbed it.
He could work with that. It was just a character, a fantasy, not Yuna, not his stepsister.
"Fine," he grunted, squeezing his eyes shut. "I'll give you the money. But... let's just pretend it's Ganyu giving me the massage. Not you. Then... it's less weird."
"Yay!" Yuna clapped her hands. "Deal!"
She scrambled over to a locker in the corner and pulled out a messy blue wig, quickly throwing it on. The change was disturbingly fast.
"Okay, okay, close your eyes, dear customer," she ordered.
When she spoke again, her voice was completely different. The bratty tone was gone, replaced by a deeper, seductive voice that was a scarily good impression of the character.
"I am Ganyu, secretary of the Yuehai Pavilion."
Makoto felt her soft, oily hands on his shoulders again. The touch felt different now, filtered through the flimsy screen of his fantasy.
"Now then, dear traveler," she purred, her fingers tracing a slow path down his spine. "Shall I… relieve your tension?"
Her other hand slipped under the towel. There was no accident this time. Her warm, slick fingers wrapped right around his throbbing cock.
"I'm very skilled with my hands, you know."
"Yeah… please do," Makoto groaned, the sound ripped right out of him.
His mind started chanting a desperate mantra. "It's Ganyu, not Yuna… It's Ganyu, not Yuna…"
"Mmm," Yuna moaned in Ganyu's voice, her hand stroking him in slow, perfect strokes. The practiced motion sent waves of guilty pleasure through him. "The traveler seems quite… tense today."
She leaned down, the blue wig tickling his neck as she whispered, "Shall I use my mouth instead? As a… special service?" Her tongue darted out and licked his earlobe. "Consider it an… archon's blessing."
Her hand tightened, her thumb swirling around the tip as she picked up the pace. The friction was pushing him right to the edge.
"Just ask Ganyu," she breathed, her voice suddenly desperate and needy, breaking character for a second. "Say you want her to suck you." He heard a faint, wet sound and realized her other hand was down between her own legs.
The mix of fantasy, reality, and her own obvious arousal just shattered him.
"Please," he gasped, his cock aching. "Suck me dry, Ganyu."
The words felt like a sin. "Totally not my stepsister. It's Ganyu," he thought, one last, pathetic attempt to save himself.
"With pleasure, traveler," Yuna purred in her Ganyu voice. The wig slipped as she knelt between his legs. Her warm breath ghosted over the head of his cock before she took all of him into her mouth.
It was heaven. It was hell.
Her tongue swirled around him as she bobbed her head, the blue hair falling around her flushed face.
"Mmmph. Your cock tastes divine, traveler," she moaned around him, deepthroating him with a skill that was both amazing and terrifying.
Her free hand was rubbing her clit furiously. Her breath came in short, sharp gasps.
"Cum for me," she gasped between slurps, her voice a desperate, needy plea.
Then, the fantasy shattered.
Her voice, for just a second, dropped the Ganyu act and became sharp, familiar, and pure evil.
"Or I'll tell mom you cum in under a minute!"
The whiplash was instant.
One second, he was lost in his fragile fantasy.
The next, the voice of his bratty stepsister hit him like a bucket of ice water. The raw, shocking reality of her threat slammed into him.
It was too much. His body convulsed. A torrent of hot, thick cum shot into her mouth, a flood of pure pleasure and soul-crushing guilt.
"Fuck," he grunted, a sound of both satisfaction and defeat. "That was cheating, Yuna. You broke character..."
Yuna sputtered and coughed, pulling away. A little bit of his cum dripped down her chin.
With an exaggerated gulp, she swallowed and wiped her mouth with the back of her hand. The blue wig was now completely crooked, showing her real gray hair.
"Oopsie," she giggled, her voice all Yuna again, triumphant and shameless. "But you came soooo hard when I said that!" She held up her hand, showing his cum coating her fingers. "Proof you love your little stepsis more than Ganyu."
Makoto felt a new wave of embarrassment. "I didn't," he grumbled, turning his face away. "My cock just… got surprised by the voice change."
She leaned in, licking her lips. "Now... about that money for Ganyu's costume. Wanna help me with the funding?" Her eyes flicked over to his wallet on the side table.
"So, how much is the costume anyway?" He reluctantly asked, still trying to get his mind back from the earlier climax.
Yuna giggled and straddled his waist again. Her wet pussy ground against his softening cock through the thin towel. "300,000 yen (~2.000 USD) should cover it," she chirped, pulling off the wig.
She leaned down, her bare breasts pressing against his chest. "And don't worry, big bro," she whispered, licking a stripe up his neck that made him shiver.
"Your secret's safe with me... as long as you keep funding my gacha addiction."
Her hand snaked down and stroked his sticky cock. "Want another round? I'll do a perfect Jean cosplay next!"
"300,000 yen my ass!" Makoto yelped, the number snapping him back to reality. He scrambled to grab his wallet. "Even a soapland only charges 50,000 (~400$)!"
He fumbled with it, his hands still shaking. With a sigh, he took out five 10,000 yen bills. "Here. Is this enough for the wig and... the service?"
Yuna's eyes went wide with real horror. "Fifty thousand?!" she shrieked, jumping off him. "That's barely enough for one ten-pull!"
She stomped her foot, her lips trembling as actual tears welled up. It was a terrifyingly good act. "Do you know how much pity I'm at for Ganyu?! Seventy-four pulls and nothing!"
She grabbed her phone and shoved her gacha history in his face. "See?! All 3-star weapons and a useless Hutao!"
Then, in a move of pure genius, she dropped to her knees. She pressed her tear-streaked face against his softening cock, nuzzling it like a sad kitten.
"Pleeeease, big bro?" she whined. "I'll give you a discount next time!"
Her top slipped open, revealing one pink nipple as she looked up at him with the biggest, most pathetic puppy-dog eyes he'd ever seen.
"I'll even cosplay as Raiden Shogun next time," she whispered. "And let you touch the booba sword."
Makoto's resolve just crumbled. "Ahem," he coughed, covering himself with the towel. He couldn't look at her. "I guess the pulls must be… expensive."
With a pained sigh, he pulled out another five bills. "Here," he grumbled, shoving them at her. "Not because I feel bad for you or anything. I'll be eating cup ramen for a week because of this."
"YAY! BIG BRO'S THE BEST!" Yuna squealed, snatching the money. She did a little victory dance, her bare breasts bouncing as she stuffed the cash into her purse.
Suddenly, she stopped, a devilish grin on her face. "Oh! Since you're being so generous..."
She reached into her locker and pulled out a pair of damp, lacy panties. "Want these? Worn panties, special discount. Only 20,000 yen!"
She dangled them in front of his face. The musky scent of her arousal was unmistakable.
"Fresh off my pussy," she whispered. "Perfect for when you're eating those cup noodles all alone."
"What the hell am I gonna do with those?" Makoto yelped. But the thought sent a forbidden thrill through him.
He sighed and pulled the last 10,000 yen bill from his now-empty wallet. "I'm not buying them," he declared. "I'm just… confiscating them. In case they get stolen by your pervert customers."
"Sure, sure," Yuna sang, snatching the last of his money. She pressed the still-damp panties into his hand. She leaned in one last time.
"Put them somewhere special, okay, big bro?"
She skipped to the door, then paused to blow him a kiss. "And remember! If you want more confiscated items..."
She winked, sliding her hand suggestively between her legs. "I've got plenty of evidence at home too."
Just before closing the door, she popped her head back in, her grin pure evil.
"Oh! And if mom happens to find those panties under your pillow?" Her giggles echoed down the hall. "You're sooooo dead!"