"Emiya-Kun!" Rin shouted as she tried in vain to wipe the mud off of her skirt, sadi mud caused by Emiya dropping a box into a mud puddle next to her, why Emiya had a box in the first place Rin didn't know. "Sorry!" Emiya quickly said, a look of terror on his face while he examined what he'd done to Rin's skirt, "I need to change, come with me, you're gonna buy me a new skirt!" Rin demanded, "But you can just wash i-" "Shut Up, we're going to the store!" And with that Emiya cautiously followed Rin to a clothing store, fully expecting to pay for a new skirt the complaining girl who he accidentally splashed mud onto, Emiya wished she would just go home and change clothes but he had no choice.

"Welcome to Generico, if you need any help just ask!" The cashier at the front said when Emiya and Rin entered, neither of them paid any mind and just trudged further into the store until they found where the skirts were, Emiya turned off his mind and just waited until Rin said she was ready to go check out, he didn't care about what she wanted to buy, as long as it wasn't too expensive he would buy it. "Hey, come to the changing room with me so you can tell me if this skirt looks good," Rin told Emiya as she began walking towards the changing room with a skirt in her hands, giving the boy no time to argue or even respond least he let her get away, so like a puppy, he followed Rin, unsure why the fuck she wanted him in the changing room with her but he figured she'd make him close his eyes before she took anything off. "How much is that skirt?" Asked Emiya once they were in the changing room, trying to distract himself with conversation so that he wouldn't look affected by the chance to see Rin half-naked, "It's 2,000 Yen, not that much," Rin responded right before she pulled down her skirt and caught Emiya off guard, after letting out a small and surprised gasp Emiya covered his eyes, blushing slightly and squeezing his eyes shut tight, "s-stop covering your eyes, dummy, if I didn't want you to see I would've told you to stay outside." Rin said, stammering a little while she talked, an obvious sign that she was embarrassed. After a few moments, Emiya moved his hand out of the way and opened his eyes to look at Rin, his eyes trailing over her body, gladly taking in the sight of a pantsless RIn.

Rin's skin was pale, but Emiya knew that already, what he didn't know previous to now was that Rin wore plain white panties. Regardless of their plainness, Emiya enjoyed the sight, almost as much as he enjoyed the cute blush that dusted Rin's cheeks, "Wow," Emiya said like an idiot, his mind leaving him for a few seconds while he viewed Rin's soft, thick thighs and rear, a bulge starting to grow in his trousers the longer he looked at his friend and classmate. "W-well, you aren't just gonna stare like an idiot with your jaw hanging to the floor, are you? Touch me a little at least." Rin demanded, to which Emiya instantly obliged, his hands latching onto Rin's soft ass with surprising ferocitiy, groping and squeezing like he was trying to knead biscuits, Rin's sudden and loud moans only making Emiya want to grope her more. "Emiya-Kun!" Rin moaned out, her face nuzzling into Emiya's chest while he played with her ass, the boy's fingers digging into her soft flesh. After a few minutes of squeezing and groping Emiya turned Rin around and pushed her up against the wall of the changing room, his hands undoing his pants and fishing his manhood out as quick as they could, ready to penetrate Rin once he got permission. "Tohsaka-San, can I...can I do it?" Emiya timidly asked the girl standing infront of him, with one of his hands on her hip to support her and because he enjoyed touching her body. Unable to speak RIn just nodded, her voice caught in her throat and unable to come out, she braced herself and closed her eyes in preparation.

In just a few seconds Emiya had half of his length inside of Rin, a small stream of blood leaking out of Rin's womanhood onto her thigh, "Did I go too fast, do you want me to stop?" Emiya asked in between heavy breaths, his chin on the crook of Rin's neck, "N-no," Rin told him, "it just hurt a little, please continue." she requested from her friend, and not even a second later Emiya began thrusting, moving his cock back and forth inside of RIn, every few seconds going another inch inside until he was pushing all the way in and pulling back out until only two or so inches were still inside of her. Rin's soft moans turned into loud ones the longer the sex went on, and realizing they might be caught Emiya turned her head towards him and kissed her, their tongues clashing immediately to cover up the sounds of Rin's pleasure. Each time Emiya thrusted his hips clapped against Rin's ass, the sounds were quiet at first, but soon it became like a concert hall full of clapping people, this sound wasn't able to be dampened unless Emiya wanted to slow down, which he didn't. The hand that wasn't on Rin's hip went to her chest to squeeze her breasts through her sweater, however, he wasn't satisfied with how it felt, so he pulled her sweater up and then he bra down so her modest breasts would be exposed for him to grope freely. "Emiya-Kun, I think I'm going to cum!" Rin announced after she pulled away from the kiss, her eyes locking with Emiya's while they fucked, "Me too, let's cum together!" Emiya said, his lips slamming back into Rin's while they worked towards their climaxes, Emiya now pistoning his cock into Rin with animalistic speed, trying to make the girl cum with him. Soon his efforts paid off, as Rin screamed sounds of ecstasy into his mouth, her womanhood clenching tightly around his member while at the same time Emiya released a torrent of semen deep inside of Rin, his cum filling her womb up nearly completely. Some of the white fluid even overflowed and gushed onto the floor of the changing room.

After almost an entire minute of just kissing and heavy breathing, Emiya pulled his lips away from Rin's, a strand of saliva bridging their mouths while they stared at one another in adoration and the embers of lust that remained after fucking, "We should probably clean up," Emiya said after a few moments, slowly he pulled his dick out of Rin, both of them grunting when his member was fully removed, already his manhood had softened back to almost full flaccidity. It didn't take long for the two teens to get dressed again, Rin not even trying on the skirt she had brought in before they left to go check out. "I hope you found everything you needed without a problem," the friendly cashier said, scanning the skirt Rin grabbed and smiling politely at the two. After sharing a quick glance Emiya smiled and fished his wallet out of his pocket, " We definitely did."

Just a short little oneshot, nothing special. If you want more Fate oneshots, or oneshots of any series lmk in the comments of this post.