Major spoilers for the entire pre lostbelt plot of Fate Grand Order, and the pseudo singularity Salem.


Da Vinci sat tinkering in her workshop as Ritsuka, Mash and the heroic spirits of Chaldea worked to gain new items and power for the next threat to the world. Da Vinci was far from what history would show though that was of her own volition when summoned as a heroic spirit of legend she chose to appear not in the guise of an old Italian man but as the ever radiant masterpiece the Mona Lisa of which he had been so famed. A beautiful woman with long light brown hair without so much as a single split end, bright almost luminescent blue eyes, pristine white skin, an elegant yet shapely body though it paled in voluptuousness compared to some of the hero's who had arrived at Chaldea, an elegant short red dress and an ego the size of a planet. She may not have been the most beautiful in Chaldea but she would still be seen as a goddess of beauty almost anywhere else. Her attention was drawn from her latest invention by wrapping at the door.
"Come in," she proclaimed happily, in entered another beauty of Chaldea, the Queen of Sheba or just Sheba. Sheba was the complete opposite in many ways to Da Vinci, Sheba's skin was pristine as well but was a chocolate brown that accentuated her Arabian origin, her hair was long dark purple with a frayed element to it that only seemed to make it look even more elegant, she possessed large breasts that were almost as large as her head, she also possed noticeable fluffy fox-like ears that matched her hair colour, she also wore what could be considered a red dress though hers was longer in the back to the point it nearly touched the ground but had nothing in the front aside from long stockings and panties, it also lacked much above her hips aside from an equally embroidered bra.
It was rare to see Sheba in the workshop as the two had come to see each other as rival merchants but it was even rarer to see her with a look of such sadness as she did upon entering Da Vinci's workshop.
"Is something wrong Sheba? the inventor asked disregarding their rivalry at the joyless gaze of her fellow caster,
"Yes, I'm just been thinking about something, Ritsuka and Mash have told me how close you were to the Doctor, Doctor Romani Archaman. Solomon. The amount of time you spent with the man I loved, how you came to love him as I do, how you saw a side of him that I never got to see." Sheba clenched her fist in frustration as she spoke, tears running down her face "I want to be happy that he had such a good friend in you but all I can feel is jealous, I want to hate you for being shown more love from my husband than I did but I can't bring myself to, it just hurts me no matter what I try!" Sheba trembled as Da Vinci starred unsure how to react to what she was hearing.
"Well, how are we going to get past this?" Da Vinci took Sheba's hand in her own coaxing a soft smile from the queen. Sheba didn't say anything she instead launched forward pouncing on the inventor before Da Vinci could try to counter she found her mouth being invaded by Sheba's tongue the queen was forcing a kiss onto the Italian, Da Vinci threw her hand out to grasp her desk to prevent the two of them tumbling to the floor. Despite her strength being among the weakest of any servant she was still strong enough to suspend the two in the air with only one hand clutching the table, had it not broken at the sudden weight she may even have been able to pull herself up despite Sheba's superior strength but the desk shattered at the sudden force, with nothing to keep them up both casters fell to the floor yet Sheba still focused on tasting every inch of the inventor's mouth, Da Vinci surrendered to the queen's seductive skill letting the Arabian queen do as she pleased. Sheba slowly pulled away from Da Vinci with a slight smile.
"You asked how we are going move past this? One of us is going to eat the other," she replied bluntly. Da Vinci gave a timid gulp unsure how to even react to such a comment,
"I beg your pardon?" the inventor gasped at the queen's response.
"One of us is going to swallow the other whole and digest them, it won't be fatal since we can just reform thanks to Chaldea's systems." the queen replied.
"So..so...who's...going to eat who?" the inventor trembled. Sheba went silent for a moment her strength diminishing,
"I think you should be the one," the queen lacked her prior energy as she crawled off Da Vinci "Do you want my feet or head first?" Sheba asked listlessly. Her calm melancholy left the inventor speechless. With a hesitant gulp, she replied to the queen.
"I'll start with your feet, are you sure about this though?" Da Vinci clasped her hands around the queen of merchants' feet timidly. The inventor pulled the thigh-high boots off the queen revealing a pair of soft furred legs that ended in cloven hooves.

"Not a word about my feet to anyone got it! And yes I am sure about this I'm never going to feel equal until this is done." the queen's threatening tone quickly changing to a low melancholy Da Vinci nodded as she brought the hooves to her mouth, her hands trembling at the idea of devouring such a beauty who she would have loved to admire or to paint.
"Now how am I going to actually pull this off, even for me this might be difficult," Da Vinci muttered to herself, Sheba answered when she began to chant a spell, Da Vinci could feel her jaw shifting in her head as a hunger, unlike anything she had experienced in life filled her. With the newfound hunger, she thrust the cloven feet into her mouth. The queen's soft furred legs entered the inventor's throat, the organ contracted around the long legs as they glided down.
"Perhaps now I can feel at peace, Solomon chose you in the end so I should love you as well. That is what I've decided, that is what I will do," Sheba whispered leaning forward to brush her hands through Da Vinci's long brown hair, the long locks washing over Sheba's creamy skin.
"I hope you will enjoy me to my fullest." she cooed tenderly as the inventor reached the queen's thighs, the artist's teeth lightly chewed the Arabian skin each nibble bringing new flavour to the surface to further entice her to devour the queen. Sheba was pulled from the floor her body arching as she dangled in the air as Da Vinci's jaws stopped at the queen's pillowy ass. With a chuckle, Sheba adjusted herself so she sat on the artist's lip, her teeth rubbing across the queen's tender flesh.
"Even master hasn't gotten to feel my bum so enjoy it while you can and just this once there's no fee for it," the queen teased, her hand still running through her preditor's hair. Da Vinci heeded the biblical queen's advice her hands leaping to grope the soft rump that rested in her lips, her hands sinking into the tender smooth flesh as she kneaded the rear as if her life depended on it. The inventor's hands squeezed the queen as a swallow escorted the heavenly ass into the waiting gullet, Sheba smiled somberly as her body continued its slow trip into the famous Italian. Da Vinci passed Sheba's hips with ease making her way across the Arabian queen's supple body new flavours striking her pallet with each swallow. Sheba removed her gentle hands from Da Vinci's head she used her now free hands to prop herself off the floor for easier consumption by her rival merchant.

"Yes, swallow me down my dear," Sheba cooed as her midriff vanished from sight, for the first time in days the queens didn't feel the melancholy that had been tormenting her for almost a week. Da Vinci's hands leapt from their resting place to once again relish in the bouncing flesh of the queen this time her full breasts that bounced slightly with every breath she took. Da Vinci lost some of the queens flavour as the cape she wore on her hips pressed against her tender meat but it was light enough to not remove or overpower the queen's savoury taste. Da Vinci's hands roughly fondled the royal rack in her hands, each orb bouncing with every lustful squeeze of the five-star caster.
"My, you really are a boob monster aren't you, between you, master and a few others I could make a fortune per if I charged per grope," Sheba laughed as the painter opened her jaws to accept the fresh helping of royal breast meat. Even with the large creamy mounds in her mouth Da Vinci insisted on playing with them as long as possible by swishing the queen's body around, each swish making the soft breasts bounce in Da Vinci's mouth.
"Such a pervert," Sheba snickered happily. After what felt to both women like an eternity the painter reluctantly swallowed the large orbs feeling them pressing her throat out as they slid down her throat, Sheba watched as the inventor's teeth began to surround her vision. Only her long purple hair, soft animal ears and slender arms remained outside Da Vinci's lips with her face resting on her devourer's tongue. The inventor threw her head back casting the queen down the hungry gullet until all of the biblical queen was gone, the only trace of her were her discarded boots and the bloated gut that held her.

Da Vinci's shop rocked as a raucous belch echoed through the room.
"I'd ask if you enjoyed me but your actions made it clear that you did," Sheba kissed a stomach wall as it pressed against her.
"You were the best thing I've ever eaten bar none. Thank you for that amazing meal." Da Vinci laid a hand were Sheba's head was gently stroking her through the large gut.
"Than perhaps we can do this again, I don't mind since I'm going to be your wife from now on." Sheba chuckled.
"Wait what?"
Yes, Back in my time it wasn't odd for someone to have many wives, so since we both loved Romani it only seems right that we love each other now that he's not here and neither of us has an issue loving women right Mr. Leonardo Da Vinci?" The queen explained casually laying her head
on the soft stomach that surrounded her.
"Well, I guess I can't deny that or that you are stunningly beautiful." Da Vinci rubbed the queen's head lovingly.
"Plus with us teamed up no one could beat or mercantile skills." the queen gasped excitedly at the prospect of new business ventures. The two enjoyed their time while they had it, talking of Solomon, of Romani, of new investments they could make and of each other.

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This was actually meant to be a sort chose your own ending, but it tanked hard and as a result I never bothered to do the alternate version