[T/L: Side note, this is not a 'what if', its something that has happened canonically in the fic.]
On the streets of The Court of Fontaine, couples strolled hand-in-hand, feeding each other snacks they held and the air was filled with a sweet atmosphere.
Inside the Palais Mermonia, Furina had the rare fortune of having no appointments today; the entire day belonged to her and Rina...
Five in the morning.
Rina carefully got out of bed and walked lightly to Furina's bedside. Her gentle face looked at the sleeping Furina and she reached out to stroke Furina's soft cheek. She curled the corner of her mouth into a smile and whispered.
'This silly girl is really sleeping soundly... It's alright, you can wake up very late today. I'll stay with you. Today is a special day.'
After gazing at Furina's sleeping face, Rina, smiling widely and went to a small corner inside the Inner Space.
In the small corner were cocoa beans that Rina had prepared dozens of days in advance. The processes of fermentation and drying had already been completed; next was shelling and grinding.
Rina released Hydro. The elemental power instantly turned the beans into a powdered structure.
Next, Rina mixed the cocoa powder with an appropriate amount of sugar, then added cream. She then sat cross-legged on the floor with a large basin containing the mixture resting on her lap, stirring it carefully with a baking spoon.
Once stirred, Rina divided the mixture into two portions: a large portion was mixed repeatedly with blue food coloring made from a Lakelight Lily and the smaller portion was mixed repeatedly with red food coloring derived from a Beryl Peach.
Finally, she took out Furina's favorite Lumitoile-style mold, poured in the liquid chocolate and placed it in a special Hydro Element Refrigerator to chill. She then secretly hid the refrigerator to prevent Furina from discovering her gift.
Just one hour had passed, it was now 6 o'clock in the morning.
Rina walked to Furina's bedside. Seeing that Furina was still sleeping peacefully and hearing the occasional extremely faint snore of the girl, she finally relaxed and returned to her own bed.
Eight-thirty in the morning.
The girl slowly opened her eyes.
"Strange? Why didn't Other Me wake me up today..?"
Furina rubbed her sleepy eyes and slowly climbed out of bed. Rina, who was pretending to sleep nearby, immediately threw off the blanket and got up when she saw Furina waking.
'Why are you up so early?'
Rina was confused. She had deliberately not woken Furina today; wanting her to get some extra rest on this rare day off.
"Hehe." Furina touched her hair. "It's just that my biological clock has become a habit! Besides, today is Valentines Day and I want Other Me to celebrate Valentines with me!"
"Although Other Me and I aren't in a romantic relationship, we can still celebrate the holiday. Who says good friends can't spend Valentines together?"
Furina thought this to herself.
But Rina didn't know what Furina was thinking. When she heard the line. "I want Other Me to celebrate Valentines me!" her face instantly flushed red. She subconsciously covered her face with her hands and buried her head in the blanket.
'Fu... F-Furina, what are you talking about!?'
"Huh?" Furina looked at Rina with a confused gaze.
"Can't good friends celebrate Valentines?"
"..."
Rina finally realized she seemed to have misunderstood something just now.
'Ahem...' Rina deliberately coughed to ease the awkwardness. 'Furina, you didn't see anything just now, right?'
"But Other Me just now..-"
Rina's expression gradually darkened.
"I didn't see anything..."
Furina decisively chose to follow her heart. Furina and Rina quickly washed up and finished a delicious breakfast together in the Inner Space.
Taking advantage of the weak morning sun, the duo went out for a walk on the streets.
On the main street, couples were visible everywhere in groups. After seeing Furina, they all greeted her.
Fortunately, Rina existed in the outside world as an energy body. Otherwise, if they saw another "Furina" dressed differently, holding Furina's left hand and floating to her left, they would probably be confused.
While Furina could not see Rina, she could sense that Rina was right beside her, leaning slightly toward her.
Furina also leaned her head slightly toward Rina's body, truly making them look like a couple.
The twins slowly walked along the street, savoring this rare moment of happiness.
.
.
.
Outside Teyvat, somewhere in the universe. Two powerful beings watched this scene.
"Click..."
Light Cone: "The Silent Winged Birds"
"Hehehehehe! They could clearly get married right away, but they insist on celebrating Valentines as friends. This is too entertaining! When that little one comes, I'll give this Light Cone to her!"
.
.
Furina bought a Candied Hawthorn Stick, preparing to share it.
"Other Me, you eat first!" Furina handed the Candied Hawthorn Stick toward Rina.
Rina: 'I don't like eating it.'
"Huh? Is that so?" Furina put the Candied Hawthorn Stick to her mouth and bit off one berry.
"It's delicious!"
Rina, her eyes were fixed on the candied stick, but she still didn't speak.
Furina seemed to realize something. She bit off another candied berry and handed the remaining stick to Rina. "Other Me, I can't eat anymore..."
Rina's eyes instantly lit up. 'Since you can't eat it, I'll reluctantly help you finish it!'
In the afternoon, the two of them watched a play being performed on Valentines Day, which told the story of the Cowherd and the Weaver Girl, the origin of the Valentines Day.
[T/L: Chinese Valentines Day to be more specific.]
In the evening, the two returned to Furina's room.
Since it was the Valentines Day, they naturally had to experience the unique traditional custom of Valentines Day. "Needle Threading."
[T/L: Needle threading is a tradition of Qixi Festival (Chinese Valentines Day) where young women compete to thread needles to demonstrate Dexterity and pray for a happy marriage. Please do feel free to correct me if I'm wrong.]
Rina waved her hand and a stream of water passed by, instantly producing two sets of Five-Colored Silk Threads and Nine-Hole Needles arranged in a row.
Rina led Furina by the hand to the table, pointing at the items on it with her other hand. 'Facing the moonlight, you must continuously and quickly thread these lines through the holes.'
"Oh... That's interesting!" Furina was quite interested and immediately picked up the needle and thread.
'Then let's have a competition. Whoever loses must give the other person a gift!' Rina proposed.
'I'm so smart. If I deliberately lose the competition to Furina later, I can naturally give him the gift!'
After the two familiarized themselves with the needle and thread, the competition began.
Rina planned to compete seriously at first and then pretend to run out of stamina later to lose the match.
However... when she saw Furina's swift hand movements—so fast she could barely make them out, as the threads passed through the minuscule holes one by one—she admitted she was stunned.
'Ah? So, Furina was actually better than me?'
At this point, Rina abandoned the idea of holding back, her expression becoming serious as she competed against Furina.
The moonlight spilled onto the tabletop, illuminating the sight of the two girls seriously threading the needles, appearing especially warm and beautiful.
A few minutes later...
Furina cheered excitedly, clearly indicating that Furina had won.
"Other Me, yay, I won!"
Rina smiled slightly. Really, isn't it a good thing that Furina is skilled? Besides, her goal had also been achieved.
'Fine, I'll keep my word.' Rina said, looking slightly helpless and pretended to reluctantly take out the prepared chocolate.
The chocolate was carefully packaged. Rina had already delivered a portion to the lonely elderly Focalors.
Inside the Oratrice Mecanique d'Analyse Cardinale, Focalors was eating the Chocolate sent by Rina, feeling a burst of warmth in her heart.
Looking at the red and blue Chocolate, Furina was even happier. "Thank you, Other Me!" Saying this, Furina picked up a blue piece, popped it into her mouth, chewed it and swallowed it in one gulp. "Mmm, so sweet!"
Rina watched the happily eating Furina and the corner of her mouth curved slightly upward.
"Other Me!" Furina said, looking at Rina while eating the chocolate.
'Yes, what is it'
"I prepared a gift for you too!"
Saying this, Furina ran to a spot and carefully retrieved a red and blue box.
Opening the box, inside was a small red and blue bracelet.
"I spent several days making this... I wove every stitch myself. It's a bit crude, so I hope you don't mind it."
Furina said softly, slightly afraid that Rina might not like her gift.
Rina froze momentarily.
She hadn't expected Furina to prepare a gift for her too, and she finally understood why she was so skilled at needle threading earlier.
Thinking of this, Rina was touched. A few tears involuntarily gathered at the corners of her eyes, and her eyes turning slightly red.
But Rina would not cry in front of others, especially Furina. She forcibly held back her tears and fell into a long silence.
After a moment.
'...Thank you.'
The Tsundere Rina could only utter these two words.
"You're welcome, Other Me, we're good friends!"
Saying this, Furina pounced onto Rina, wrapping her arms around her body and resting her head on her shoulder, her face radiating happiness.
"It's normal for good friends to hug!" Furina said with a smile.
Rina was initially stunned and froze at Furina's action, remaining motionless. After a moment, she smiled knowingly and placed her hands on Furina's back.
The two girls embraced each other's soft bodies, remaining silent. After a long time.
"Other Me, Happy Valentines Day!"
'Furina... Happy Valentines Day!'