Makoto and Yuna entered the spacious hotel room, hand in hand. "Well, it's just the two of us now. I kept my promise." he leaned in to kiss her forehead, and then her cheek.
"You did," Yuna whispered and kissed him back.
The moment the hotel room door clicked shut behind them, the fierce competitive mask of the main wife melted away, leaving just Yuna the stepsister. She didn't pull him into a passionate kiss or start stripping yet. She just leaned against him, her head resting on his chest.
She wrapped her arms around his waist and just held on. The room was dark, lit only by the faint ambient glow of the city lights through the massive floor-to-ceiling window. It was quiet, a peaceful contrast to the noise of their life.
For a long moment, Yuna just stood there, breathing in the scent of him, listening to the steady and familiar beat of his heart. "Idiot, big bro," she murmured into his shirt; the word sounded like a soft, affectionate caress.
She pulled back just enough to look up at him, her gray eyes, usually so sharp and calculating, now soft and shining with an emotion he rarely got to see from her. "I missed this when it was just us."
She took a shuddering breath, a single tear tracing a path down her cheek. "I know that I'm a bitch. I know that I'm a greedy, selfish, and unreasonable little stepsister." She looked at him, her eyes wide and pleading. "But you're mine. And you're not allowed to leave me. Ever."
"I'm yours, and I'm always yours," Makoto wiped her tears, kissed her hair, and then pecked at her lips. "Even if sometimes I need to share you with the others. But for this one hour, I'm solely yours, Yuna."
He lifted her up and threw her playfully onto the bed. "Are you ready for that boring, romantic missionary?"
A startled squeak escaped Yuna's lips, followed by a soft "oomph" as she landed in the middle of the plush, king-sized bed. She bounced once, her sleek black dress riding up her thighs.
For a moment, she just lay there, looking up at him, her hair fanned out on the white duvet, her gray eyes wide and luminous in the dim city light. The tear track was still glistening on her cheek.
And then she smiled. A genuine and beautiful smile, the kind he rarely saw, the kind she saved just for him. "You idiot. You're supposed to be gentle." She propped herself up on her elbows, her expression shifting to a familiar, playful pout.
Yuna kicked off her heels, the shoes flying across the room and landing with two soft thuds on the carpet. With a slow motion, she reached behind her back and unzipped her dress. The fabric parted, revealing the smooth, pale skin of her back. And underneath… she was wearing a full set of black lace lingerie, with a matching garter belt and stockings.
"So," she said, her voice husky as the dress pooled around her waist. "Are you just going to stand there and stare, pervert? Or are you going to come here and get your anniversary present?"
"Gorgeous…" Makoto quickly undressed and leaped into the bed, crashing his lips against hers. The moment their lips touched, a guttural sound escaped Yuna's throat. This was what she had been waiting for, not just all night, but for weeks.
She kissed him back with desperate and almost violent intensity, her lips parting, her tongue darting out to meet his. There was no gentleness here, just pent-up need. Then her hands came up, tangling in his hair, pulling him closer, harder against her.
When Makoto's left hand closed over the lace-covered mound of Yuna's breast, her back arched, a pleased hiss escaping her lips. "Ngh… you idiot… Took you long enough…" she breathed against his mouth. Her nipple, already hard, pushed insistently against the delicate fabric under his palm.
Then his right hand slid down her stomach and into the wet heat between her legs. It completely undid her. Her hips gave a sharp, involuntary buck against his palm. Her lace panties were already soaked, a testament to how long she had been thinking about this moment.
"Ah… ahn!" she gasped, her head tossing on the pillows as his fingers found her clit. "Wait… you… you said… missionary…" Yuna was now a mess of conflicting desires. She wanted the slow romantic burn, but her body was screaming for a fast, hard release.
"Stop teasing me, you pervert…" she whimpered and pleaded. Her legs fell open, giving him better access like a silent and desperate invitation. "We only have an hour. Don't waste it!" she panted, her eyes fluttering open, stormy gray and filled with love. "Just fuck me. Please. Fuck your wife."
Makoto said nothing and got on top of her, linking both hands with hers. His cock easily slid into her eager cunt. A strangled cry was torn from Yuna's throat as he entered her. Her cunt, slick and hot, clenched around him like a fist.
"You're still as tight as… that day we first fucked, Yuna," Makoto whispered and slowly moved.
"Shut up…" she sobbed, her voice tangled between pleasure and embarrassment. "Don't talk about that… it's embarrassing…" But her body betrayed her. Her hips, which had been still, began to move in rhythm that met his every thrust.
Her legs wrapped around his waist, her heels digging into his lower back, pulling him deeper. "You're… you're a monster," she panted. "A fat, perverted stepbrother. But you're mine!" And then she pulled him down, her lips crashing against his, and he was lost.
Makoto lost count of how long it was until he released his thick load into her cunt as usual. Yuna cried out as Makoto's cum flooded her. Her inner walls clenched and pulsed around him, desperate and greedy, wringing every last drop from him. Her own orgasm hit her like a freight train and left her a boneless, trembling wreck in his arms.
"I love you so much, Yuna…" Makoto groaned and collapsed onto her. For a long, silent moment, the only sound in the room was their ragged breathing and the frantic pounding of their hearts.
Yuna finally whispered, her voice muffled against his skin, "…I love you, too." She clung to him, her usual armor of sarcasm and fury completely gone. She whispered into his skin, so quiet he could barely hear it. "You fat, stupid, perverted pig that fucked his own stepsister.
"And you got it all over the sheets, you dirty pig…" Yuna's hand, which had been fisted in his hair, began to gently stroke his back. "Happy anniversary, husband!" she murmured sleepily.
Makoto closed his eyes for a short rest, as Yuna slid out of him and got into the restroom "for a little wash."
As she walked out, he turned his head around, his eyes almost popped out as he realized what she had put on. "Was that…?"
The sight stopped his heart.
Yuna wasn't in the sexy black lingerie anymore. She was wearing the Ganyu cosplay. Not the cheap, store-bought one from the hotel fuck-fest, but the one they had made together for GenshinCon, the one with the perfect stitches, hand-sewn details, and bells that jingled with a soft chime.
Her gray hair was tucked under the silky blue wig. Her eyes were a deep, soulful violet, the same color as the contacts from the con. She was Ganyu. His one and only Ganyu.
"What?" She fidgeted with the sleeve, pure tsundere nervousness. "You said that you wanted a boring, romantic night. This is romantic, isn't it?" A deep blush was spreading across her face. "It's a tribute to our first time. Our real first time."
Without meeting his eyes, Yuna just stared at a spot on the carpet, her entire body trembling with embarrassment. "So…? What do you think, traveler?"
"Well, you still look as good as I remember. No, even better, after birthing our Yumi." His cock magically recovered from the sight.
Hearing that, Yuna finally looked up, and her eyes were shining with a mischievous grin. "Then... do you still want a happy ending from Ganyu, traveler?"
"Of course I do!" Makoto rushed to her and pushed her to the door, gripping her horns from behind. "Our time is almost up, so let's be quick, my Ganyu."
A gasp escaped from Yuna's throat as he pressed her against the cool, solid wood of the hotel room door. The horns, the ones he had broken and then painstakingly repaired together, were a familiar anchor in his hands.
"Ngh… you're… you're such a pig," she panted, half laughing, half moaning. "You just had to… do it doggy style… in the Ganyu costume again…" But her ass was already pushing back against him. It was her desperate plea for more.
Makoto entered her with a single smooth motion. Yuna cried out, making a high sound of bliss, her hands flat against the door, her head thrown back. The bells on her costume jingled, making an obscene soundtrack to their fucking.
"Quicker, traveler…!" she gasped. "The others will be here soon…!" The thought of being caught, of the others walking in on this private and incredibly lewd scene, was a powerful aphrodisiac. Her hips moved in a frantic, shameless rhythm that met his every thrust.
"Come on, traveler…" Yuna panted. "Just give Ganyu… your seed…" Her voice dissolved into a high keening wail as her orgasm ripped through her.
Then, a soft click echoed from the other side of the door.
Oblivious to the sound, Makoto grunted, flooding Yuna for the second time. He gripped her horns and kept ramming his cock into her, then finally shot his second thick warm cum deep into her, as the door slowly opened next to them.