Undertale X Reader

Be Gentle...(Underfell Frisk Lemon)

You were thinking at the dinner table...Back in the AU's would there be Frisk's and Chara's? Since Chara did mention that you were here by accident which makes you special. So that must mean Frisk and Chara would be the girls to travel the underground! You then thought back to Underfell...as bad as a place it was there must be a Frisk there who would want to spare and use Mercy like in this timeline. "Hey, you alright?" You looked up at Alphys and Undyne "Y-you've barely touched the noodles..." You sipped down a few noodles from the pot "Right. Sorry. Just was thinking about some stuff." 

You slurped down the rest of the noddles and put the pot on the side "Welp. Let's get to it" You opened up a portal and it was at the flower bed of Underfell. You hopped in and waited "They should fall any-" A loud *Poof* Hit the ground infront of you like a girl laid in front of you. She wore red and white shoes with black rims, black shorts, a black jacket and a red sweater with a collar strangely enough. She slowly got up and you backed away "Hey..." She looked at you in fear "U-um..." You gave her a warm smile as she seemed a bit afraid "I'm (Y/N)...You ok? That was a big fall-" She sighed "I-it's 40G...70G if you want to do it with kinks" You blinked a bit in confusion "...D-don't pretend...If this is s-some kind of roleplay kink you have I said it'll be 70G.." "For?" She looked at you "S-sex...Isn't that why y-you're here? Just to fuck?" You blushed and shook your head "Ewww! What!? No! Jesus! What did the world do to you to make you think that?" She lowered her head in shame a bit "Sorry...My names Frisk..." You and Her sat at opposite sides of the flower patch

"So...When I was like...God, I think it was at 10? My mom started Prostitution...? Then my dad divorced and went on to become a billionaire. I went with Dad since my Mom left ages ago. But I was beaten and pushed around by his security, his friends, even him...When I became 16 my dad started using me for sex...I was used as a "Fuck Toy" According to him from then onwards...Now that I'm 18 I was a prostitute on the streets and I ended up escaping to here...I jumped to try to get away but when I saw you I realised I might never getaway...Then I realised that wasn't your plan" You held out your hand "Come with me" She hesitated "...R-right...We just met...I'm sorry. I just wanted to try help" You opened a portal and stood up "But the tickets here if you wanna escape?" She stayed silent. Before you closed the portal she stopped you "I want to come..." You smiled and let her through.

She was introduced to your room "It's a bit small...and lame looking..." You were a bit speechless "This girl! She was used a prostitute and the moment I let her into my house SHE judges ME!? Damn..." You thought "But I like it" You sighed in relief "So um...Want to meet everyone? Well...A few of them are out. I'm pretty sure. Alphys, Undyne and Papyrus are still here though. Come on" You took her downstairs and stopped as you began to back up "Uh...We're gonna need to take the collar off or you'll look weird...I don't want them thinking badly of you..." She slowly nodded and took the collar off. She took a deep gasp of air as you noticed a red mark around her back "Jesus how long have you had that?" "Since I was 8..." You stumbled around a bit "Oh my god I'm gonna erase a whole ass timeline..." She seemed confused as you stood upright "Let's just...Go" You took her down to meet everyone

She was shy coming down "Hey guys. This is my friend her name is...Kanna..." She looked at you confused and you whispered to her "I'll explain later just please act as if you're Kanna" She nodded and rubbed her hands together "I-i'm Kanna" Alphys squished her cheeks "OMFG! She's a-a-adorable!" Undyne hugged Fell Frisk tightly "Ooooh! You're so shy and cute! I wanna keep you!" Frisk smiled a bit as she was warmly embraced. You and Papyrus joined in the hug. You explained Frisk's story but with a twist. Instead, her parents were killed and she was sent out on the streets as she was forced to work at a stripper bar at a young age. It wasn't all good but you had to do it with a small twist "Damn kid...I'm sorry about that...But you met (Y/N)! The nicest guy ever! He saved all of us from the underground!" She smiled softly at you "Yeah...I-I know..." She cuddled your arm "Awww. Heh. Well us 3 were gonna head out for a bite so you 2 will be in charge. Cya!" They all left with Papyrus giving Rocky a few sprinkles before leaving.

You and Frisk awkwardly sat on the couch "Wanna watch something?" "Y-yes!" She and you smiled as you turned on the TV

*LEMON WARNING! LEMON WARNING! ALERT ALERT! THIS IS NOT A DRILL!*

A sex film came on "Oohh yeah! Thrust in harder!" You changed the channel. A horror movie but it was the sex scene "Ugh yeah fuck me, daddy!" You changed it again. Frisk looked at you nervously sweating as a Romance movie came on "Welcome to love on the beach" You sighed "Finally. This one is clean!" You heard from the TV "Sex edition" You growled and kept changing the channel but everything was sex! Then you realised it was Pornhub... You turned off the TV and sighed "Look don't worry about it...I-I know it's weird when 2 people watch sex films but...Hey. I don't mind it with you...I'd let you know if I'd actually want to do it" You smiled and laid back with Frisk slithering upon you "...W-would...You like to?" You gazed into her calm eyes "...This is a trick question..." She giggled "No...I'm serious...All those times as a kid up to now...They don't count. Not since I haven't met a real man yet...You. You're a real man...B-but with protection I don't want kids..."

You and Frisk began to kiss and make out...You didn't need romance music to tell this was going hard. You softly gripped her thigh as she lifted off your shirt. You moved your hand up her leg and gripped her butt "Mmm~" You pulled away "Sorry did that hurt?" She shook her head "B-but please try to be gentle" You nodded...As you took off your trousers and underwear. You threw your socks away to be completely naked. You went down and kissed her and while doing so slowly stripping her down. She clenched the couch while you held her hips. She moved her hands around your neck to deepen the kiss. You moved up to rub her soft chest. Your member pushed on her woman-hood "Aah~" You smiled and licked her neck "Mmm~ So good~" You pushed the tip in "A-ah! I-it's bigger...then expected" You mumbled, "God damn bitch..." You slowly moved it all inside "M-mmm~" You slowly began to move while groping her chest and licking her neck. She dug her nails into your back as you moved "Aah~ Haa~ Mmm~" She began to moan more and more. You moved your hands from her boobs to her butt and gave it a gentle slap. She let out a soft moan as you moved a bit faster "I'm gonna speed up a bit ok?" She slowly nodded. You began to speed up and she moaned more "Aah~ A-ahh~ Ooooh~" Your grip on her butt tightened. As you began to thrust more and more into her you felt a tingling feeling rising within you. The urge. It grew and grew! Until! "Aaaahhh~" You moaned, You came...You pulled off the protection as she held open her mouth "Can I have some?" She begged. You fed her the semen as she swallowed it "Mmm..." You pulled a blanket over you 2 and cuddled "...Hold on...Everyone will be back soon. I should send you back through the portal but I'll come and visit soon ok?" 

You waved bye to Underfell frisk as she exited through the portal dressed up of course. You sighed and laid in bed "Phew...What have these last few days been?"

Authors note: I know most of your requests weren't brought forth but you will get a chance in the future. That's a fact