For this video gen I used the WAN2.2 WAN 2.2 I2V 14B Lightspeed (S) High/Low models from https://civitai.com/models/1981116?modelVersionId=2388548 . I used the ComfyUI workflow from the same creator at https://civitai.com/models/1823089

The grand library of Canterlot Castle hummed with warm afternoon light filtering through tall, stained-glass windows. Dust motes danced in the golden beams, and the air was thick with the scent of old parchment, polished wood, and the unmistakable, sweet musk of arousal. Two massive beds of silk and velvet lay nearby, half-hidden behind towering bookshelves, and the low, distant rumble of distant thunder could be heard outside.

Princess Celestia stood first, her long, flowing mane of turquoise and cyan cascading over her shoulders like liquid starlight. She wore nothing but the golden tiara and her crown of stars, her elegant white body already glistening with a light sheen of sweat. Her heavy breasts rose and fell with each slow, measured breath, nipples stiff and flushed pink. She reached out with one elegant hoof and gently brushed Luna’s mane aside.

“My dearest sister,” Celestia murmured, voice soft and warm like sunlight on water, “you look absolutely radiant today. The whole kingdom feels the power of your presence… but I feel it most keenly in the way your eyes are already darkening with hunger.”

Luna stood before her, the Night Princess in all her glory — midnight-blue mane swirling with violet and black, her dark alicorn body radiating quiet power. Her teal eyes burned with restrained passion, and she wore only the black collar with the white eye symbol that marked her as her sister’s equal. She stepped closer, towering slightly, and cupped Celestia’s face with both cloven hooves.

“Power?” Luna’s voice was a low, velvet growl that vibrated through the air between them. “No, Celestia. What I feel now is something far more dangerous… and far sweeter.” She leaned in until their horns nearly brushed. “I have spent three centuries dreaming of this moment. Of you. Of us. And today… today I intend to devour you.”

The first kiss was slow, almost reverent.

Celestia’s lips met Luna’s with exquisite tenderness. Their tongues met immediately — soft, exploratory, tasting. A thin string of saliva already stretched between them when they parted, glistening in the light. Celestia’s breath hitched, her massive breasts pressing softly against Luna’s chest as she sighed into the kiss.

“Mmm… Luna…” she breathed, pulling back just enough to speak, lips still brushing Luna’s. “Your mouth… it’s so warm. So hungry. I can feel it everywhere.” She tilted her head, offering her neck. “Kiss me there. Please. I want to feel every inch of you claiming me.”

Luna’s teal eyes flared. She obeyed instantly, lips sealing over Celestia’s throat. The wet, open-mouthed kiss sent a visible shiver through Celestia’s body. Her hips rolled forward instinctively, grinding her slick pussy against Luna’s thigh. A soft, needy whimper escaped her, and her hooves slid up Luna’s back, claws lightly raking.

“You’re trembling,” Luna purred against her skin, voice thick with lust. “Already so wet for me, aren’t you? I can smell it — that sweet, warm scent of my sister’s arousal. It’s driving me mad.” She sucked gently at the base of Celestia’s throat, then bit down just hard enough to make Celestia gasp. “Does that feel good, my star?”

“F-fuck… yes!” Celestia’s voice cracked, high and needy. Her massive breasts heaved, nipples dragging across Luna’s fur with every breath. “It feels… it feels so much better than anything I’ve ever felt alone. Your mouth on me… it’s like the sun and the moon at once.”

Luna pulled back, strings of saliva connecting their lips again, and captured Celestia’s mouth once more. This time the kiss was deeper, messier, hungrier. Their tongues danced in a slow, filthy tango, saliva strings stretching and breaking as they kissed. Celestia moaned loudly into the kiss — a broken, melodic sound that made Luna’s cock twitch visibly beneath its sheath.

Celestia’s hands roamed eagerly, cupping Luna’s heavy breasts, thumbs circling the stiff pink nipples. She broke the kiss just long enough to gasp, “I want to taste you too… all of you. Every inch of my beloved sister.”

Luna’s grin was wicked and tender at once. She guided Celestia down onto the nearest velvet bed, following her down until they were tangled together, breasts squishing together, horns pressing side by side. Luna hovered above her, massive breasts hanging like ripe fruit, and kissed down Celestia’s neck, her collarbone, then lower.

When Luna reached Celestia’s left breast, she took the heavy, warm mound in her mouth with a wet, obscene sound. Her tongue swirled around the stiff nipple, sucking hard enough to make Celestia arch and cry out.

“Ah—! Luna—! Yes— right there— your mouth feels so good on my breasts!”

Luna hummed in delight, the vibration shooting straight through Celestia’s body. She switched sides, sucking and licking with shameless hunger, one hoof sliding down to gently squeeze the other breast. Celestia’s thighs trembled, and a thick strand of arousal dripped from her glistening pussy onto Luna’s belly.

“You’re making me so wet,” Celestia gasped, voice cracking. “My body… it’s all yours. I don’t want to be anywhere else. Fuck me with your mouth — please — I need it.”

Luna didn’t need telling twice. She spread Celestia’s legs wide and buried her face between her sister’s thighs. The first long, slow lick from clit to entrance made Celestia’s back bow off the bed. Luna moaned at the taste — warm, sweet, musky, perfect.

“Oh my stars… you taste divine,” Luna growled against her folds. “So wet for me already. All this because of my tongue?”

Celestia’s answer was a broken, desperate moan as Luna’s tongue circled her clit, then plunged inside her. The wet, rhythmic sounds filled the library — obscene, filthy, and utterly perfect. Celestia’s hooves dug into Luna’s mane, holding her there as pleasure built wave after wave.

“I’m going to cum — Luna, I’m— ahhh—!” Celestia cried, body shaking violently. Her orgasm crashed over her in long, shuddering pulses, pussy clenching and squirting around Luna’s tongue. Luna drank every drop, groaning like a woman starving, licking her clean while Celestia rode out the aftershocks, sobbing with pleasure.

When Celestia finally stilled, panting and glistening, Luna crawled up her body and kissed her again — slow, deep, and sharing every taste of her own sister’s orgasm.

“Your turn now,” Celestia whispered, voice husky and commanding. She pushed Luna onto her back, straddling her hips. “I want to taste my Night Princess until she’s shaking. And then… then I want you inside me. Slowly. Deeply. Until we both forget we’re sisters at all.”

Luna’s teal eyes blazed with raw hunger as Celestia took her into her mouth, sucking and licking with the same devotion she had just received.

The library rang with the wet sounds of mouths and bodies, the soft cries of two princesses who had waited centuries for this moment, and the quiet, profound knowledge that no matter how many stars they ruled, their love would always be the brightest.

And they had all the time in the universe to enjoy it.