His body was a spent husk, but his mind was a storm. Makoto lay beside the ruined form of Ganyu, the scent of sex thick in the air.
He had to keep the fantasy alive. It was the only thing shielding him from the crushing reality of what he'd just done.
"Yeah… just give me a minute," he murmured, his voice rough. He kissed her cheek, a gesture that felt both tender and profoundly wrong, and collapsed next to her.
He looked into her eyes, half-begging her to keep the illusion going. "I hadn't just creampied my own stepsister," he thought.
Ganyu giggled sweetly, a sound that was starting to sound less like the character and more like Yuna's triumphant purr.
She curled against his side with a practiced innocence that was deeply unsettling.
"Of course, dear traveler," she purred, her fingers tracing idle patterns in the cooling cum on her stomach.
Then, with a sudden jingle of bells, she sat up. "Oh! Ganyu almost forgot."
She reached into her backpack and pulled out a small vial labeled "Fertility Potion", a cheap prop from a cosplay store.
With a dramatic flair, she uncorked it and drank the contents, which were probably just juice.
"There!" She beamed, flopping back onto his chest. "Now traveler's seed will surely take root."
Her hand drifted down to rub her cum-filled pussy again, a casual, obscene gesture. "Shall Ganyu prepare some... special secretary reports while we wait for round two?"
"Yeah, sure. Come here," Makoto said, pulling her into his arms. He needed the distraction. "What do you have to report?"
Ganyu snuggled closer, her bells jingling as she pulled a fake-looking scroll from her cleavage. "Let's see," she murmured in her sweet secretary voice.
"Report number one: Traveler's performance was most satisfactory." Her finger traced a line across his chest, leaving goosebumps in its wake. "Though perhaps a little too vigorous. Ganyu's qipao is ruined."
"Report number two:" The mask of Ganyu slipped for a second. Her voice dropped, becoming sharp and familiar as she whispered in his ear, "Big bro owes me 50,000 yen (~330$) for costume damages."
Then, just as quickly, she was Ganyu again. "Ahem! That is… the Qixing will be sending an invoice."
"Final report…" Her hand slid down his body, closing around his softening cock. He stirred instantly. "Ganyu detects rising energy levels. Round two may commence soon."
She grinned wickedly, giving him a slow, deliberate stroke. "Shall this humble secretary assist you?"
He didn't need any help. A fresh wave of possessive lust crashed over him.
"Anything else you need to report, Ganyu?" He pushed her down onto the satin sheets, rolling her onto her stomach and grabbing her horns as he entered her from behind.
"Ah! N-nothing to report!" Ganyu squealed as he slammed into her, her bells jingling wildly.
Her torn qipao was hiked up, exposing her cum-leaking pussy stretched around his cock.
"Except... ah... that the traveler is... mngh!... exceeding his authorized breeding permissions!"
Her voice broke beautifully as he pulled her horns like reins. "T-this humble secretary must file a complaint about... OH!...excessive creampies!"
Her fingers clawed at the sheets. "G-Ganyu… might get... pregnant for real!" she managed before collapsing face-first into the mattress, her body convulsing around him in another forced orgasm.
"Nah," he growled, the possessiveness turning into something darker. "Who said you could cum before me?"
He slapped her ass, the sound sharp in the quiet room, and kept thrusting through her climax.
SMACK.
Ganyu yelped, a mix of pain and pure pleasure. "A-ah! F-forgive this incompetent secretary!" she gasped, her voice cracking.
"T-Traveler is… too powerful! Ganyu can't… mngh!… control herself!"
Suddenly, she arched her back, reaching behind to spread her ass cheeks in a gesture of pure, lewd submission.
"P-punish this naughty secretary properly!" she wailed in a perfect Ganyu voice. "Fill Ganyu's worthless womb until she learns her lesson!"
Her pussy clenched like a vise around him.
"So naughty," he grunted, pushing her head down into the mattress. He pinned her with his full weight, dominating her completely as he began to fill her up again.
Ganyu's muffled screams vibrated through the bed. "MMMPH! MMPH!"
Her bells jingled frantically with each powerful thrust, mixing with the wet slap of skin on skin.
When he finally came, she collapsed in a trembling, cum-drenched heap. The blue wig had come completely undone, revealing Yuna's sweaty gray hair.
"...traveler wins..." she panted in a broken Ganyu voice, her ruined costume barely hanging on. "...Ganyu submits... completely."
Then, in her own voice, raw and exhausted, "Fuck… you better buy me that Raiden Shogun costume next..." before passing out face-first in the pillows.
For a horrifying moment, he thought he'd broken her. He gently covered her with a blanket.
After a long, restless nap, he waited for her to wake up, a glass of water ready.
She stirred groggily, blinking up at him. "Mmm… five more minutes, I'm tired, big bro," she mumbled before suddenly jolting awake. "Wait! I mean—"
She cleared her throat, adjusting the wig he'd gently fixed. "Ahem! This humble secretary had the most... enlightening dream about her dear traveler."
Her hand drifted down to touch her sore, cum-filled pussy beneath the blanket.
Then she sat up with a wince, the blanket falling to reveal the utterly ruined costume. Her eyes widened in genuine horror. "Oh shit! My Ganyu cosplay!"
She pouted at him. "You're buying me a new one! And paying for my wig's dry cleaning!"
The shift from Ganyu to Yuna was complete. The fantasy was over.
"Fine, fine, I'll buy you a new one," he sighed, a strange feeling in his gut. "And I don't want you showing this ruined costume, or a new one, to anyone else anyway."
The words were out before he could stop them, raw and possessive.
Yuna's eyes lit up like a shark that had just smelled blood. "Oho? Is big bro getting… possessive?"
She scooted closer, the torn qipao barely covering her cum-leaked breasts. "Does that mean you want me to be your… personal Ganyu?"
She batted her eyelashes, her voice shifting back to Ganyu's. "Traveler wishes to monopolize Ganyu's services? How scandalous."
Then she dropped the act, her grin turning wicked. "That'll cost extra! A monthly retainer fee! And you have to fund all my future cosplays!"
Her hand snaked under the blanket, tracing his softening cock. "Starting with Raiden Shogun next month."
She leaned in, whispering, "Imagine me riding you while screaming 'INAZUMA SHINES ETERNAL!' as I cum."
"Nope, nope," Makoto said, patting her hand away. He was flustered, embarrassed. "I don't care if it's Ganyu or Shogun cosplay, it's just… you."
He bit his lip, turning away. "Nope, you didn't hear anything. Let's go before we get charged extra."
Yuna's jaw dropped. For a moment, she was speechless. Then her face split into the most triumphant, shit-eating grin he had ever seen.
"AWWW! BIG BRO LIKES ME FOR MEEEE," she shrieked, tackling him in a hug.
She pulled back just enough to wiggle her eyebrows. "Don't worry, I'll keep your little confession secret… for the low, low price of a 100,000 yen monthly retainer fee."
As Makoto scrambled to get dressed, Yuna skipped to the bathroom, leaving the door wide open while she peed out his cum with loud, theatrical moans.
"Oh god… traveler filled Ganyu so full…" she called out in a perfect character voice, followed by her real one.
"HURRY UP, BIG BRO! THEY CHARGE EXTRA AFTER THREE HOURS!"
"That's your fault for sleeping so long," he sighed, throwing her the hoodie and shorts she'd brought. "Want to get dinner afterwards?"