Conducting Experiments

by Golden_Boy_kairo

Rating: mature
Tags: Romance, Human
Length: 2538

Human sex mature domination M+F straight female domination

Raiden Masters your typical descendant of a legendary god is in for a wild night when his best friend twilight sparkle calls him over for an experiment, to see how much a powerful god like himself can take .

Published 1970-01-01 00:00:00 UTC
Last updated 2015-10-09 13:25:42 UTC

Chapter 1

A warm Saturday evening I was at home playing my ps4 bored has fuck. My twin brother Vergil was on a date with his girlfriend Rainbow Dash. They only been dating for a few days and they already  been going at it like they are married or just two lovers that keep doing booty calls I couldn't get no sleep last night even when me and Vergil got two different rooms I was little tired and it was only 6pm. I was playing Metal gear solid 5 on the brink of completion I was on the final boss metal gear Rex when my phone had suddenly rang. Speak I answered, it was twilight's phone number but it was spike who called. Uhh raiden twilight wanted me call you to come over she needs to see you he said kinda nervous. Oh but why she couldn't call me herself? She's busy in her lab and also  she said its urgent and stuff . okay I'll be right over I replied and hung up. Oh twilight always having spike to do the wet work as if hes your secretary or assistant I thought to myself. I changed some clothes with a black tank top khaki joggers and levis. I turned off my ps4 sighing as I did it was not going to save but whatever twilight has planned better be important. I drove off in my 2015 ford mustang Gt. Doubt and question going throughout my mind. It  wasn't long before I got to my destination. I knocked the door to her big crystal castle I wasn't as big as celestia's castle but it was large on the inside. It was spike who answered, hey what's up raiden twiligh's in her lab she's waiting for you he said. Aite I replied. I never really had a thing for twilight but back in canterlot high I was a little ashamed to try to win back her admiration when when this royal guard trainee "Flash Sentry" started going to our school. I guess because I never made a move on her he stole her heart . I was pretty jealous I admit. I could tell she used to like me back in junior high but its been so long since I talked to her, we started to drift apart. My thoughts were interupted by the klacking of keyboard typing. It was the one and only Twilight Sparkle. Hey I knocked on the door trying to scare her. She jumped anyway and quickly turned her computer that I paid no attention to. Hi'ya Raiden I've been expecting and right on time I see she said in a sultry tone fluttering her eyelashes. I gave a her look around admiring her figure, what didn't really get me on her was her shyness and her body. Back then in middle school and 9th grade she was a little skinny. But now that her puberty has kicked in she gained some weight and still keeping a lustrous dude magnet figure at the age of this 18 made her body as if she was a sex goddess. Her D cup size breasts was straining against her tight red sweater, her thick child bearing hips being imprisoned by her Khaki jeans to top it all of her red high heel boots. I gulped and felt a little nervous as she approached me running her finger lightly on my hard chest. I want to gather data on how a gods' body is so exquisite and more powerful than a regular human body she informed. But you're a demi god I thought to myself. OK so how do I have a hand in this? You're my test subject and princess celestia herself gave me this assignment she answered my question with great affirmation. Princess celestia my step mother ? Yes and she specifically ordered for you to help me with this experiment. Oh okay how do we beg-----. I was cut off when twilight snuck behind with her hands on my shoulders her mouth close to my ear,feeling her warn breath on my ear and said. Take off your clothes boy she purred. Oh well I said kinda reluctantly. I began with my tank top than all the way down until I was only in my boxers. My cheeks grew a ruby red along with twilight blushing just staring at my lean ripped body. The part her eyes were focused on was my abdomen and crotch section. Damn I heard say under her breath. Ok so I need you to sit right here so I can take your pulse, breathing,vision and hearing diagnostics. I sat down relaxed as she laid the cold stethoscope on my back. Breathe in.....haaaaaa....breathe out...........ohhhhhh. I felt her large boobs press against me her soft nipples pressing against my back. Your breathing patterns are so smooth much smoother than of a humans' she completemented. My pulse was a little faster than a human but that was because I was so pent up and even relax. Next after taking the dianogstic she printed a papers of my results. Okay I'll be right back don't go anywhere Raiden she said while walking out the lab seductively her huge fat ass bouncing with each step the last few years have been kind. Millions of thoughts buzzed through my head. I never thought of twilight being this kinky before, why is this an experiment and why did "PRINCESS CELESTIA " assign it to her I stopped thinking and took a deep breath as I relaxed and laid back on the chair . Relaxed my tired muscles assassin training as been brutal. Oh did I mention that I was an assassin but that's for another time. Distracted by my thoughts Twilight came in unoticed. I finally looked over, my eyes nearly jumped out of my head. Completely stunned at sight. Twilight a full dominatrix outfit leather thigh high boots a black microkinI with cameltoe. The bra barely covering her awesome bosom just covering the just the nipples. You like what you see boy? She asked playing with her blobs and showing her huge ass. I just hooded rumbly not noticeing the whip she had in her hand. This is also part of the experiment since i'm a demi-god and can still inflict pain on full gods I want to see how much you can take. The words she just said made me snap back out of my trance. Oh fuck my did celestia choose me, why not vergil? Because she thought you would be the best man for the job and vergil already has a girlfri.........oops she said then covering her mouth with a candy red blush on her face. Wait what girlfriend I thought you were just testing my limits. Yea that to but Celestia also wanted us to have......she trailed off blushing even more and bowing her head down. I walked up to her but closer than the friend boudaries. Look I already have an idea she's wants us to have sex so there will be a heir to the throne because your sister in law cadence had her tubes secretly tied. Yea but I been wanting to do this ever since middle school she said kinda of ashamed with tears in her eyes. Look raiden I love You, I know I went out with flash for a few years but when I caught him cheating on me with Trixie a few months ago, and i knew he wasnt the right one for me because as I made out with him; I always kept thinking about making out with you she said this time with a little more gravado. As she faced me with those lustful eyes and before  could say something she jumped puled me down for a long kiss. I was taller than she was 6'3 she was like 5'9. But she still found out how to surprise me. She moaned as she stuck her tongue inside my mouth but still my tongue easily overpowerinh hers. Her hand drifted from behind my neck to my crotch slowly caressing with her soft hands. Please Raiden I need you!!! She whimpered tugging at the string of my joggers. Aite c'mon bitcn whip that monster out I demanded while just regreting what I just said. She tugged my joggers and boxers with ease. WOW Raiden I never knew you were so big twilight said in ase admiring my 10 inch cock. I couldnt say thank you because her tender hands stroking my iron hard dick, busy moaning. She played with the slit of the gently licking it with her tongue. With a generous amount of pre-cum flowing from it. Oh thats fast for a big Boy like you she teased. I covered my my face in shame. Its been a year since I had that one night stand sunset shimmer and I stopped jacking off ever since 7th grade. She stood with mini Raiden disappointed. First I still need to ser how much you can withstand. She pulled a thick ring out of her bra. What's that for I asked. Oh this is something that will prevent your big guy down fuere from arriving to early she replied. What I really felt like doing grabbin' her by her thick ass, shovin'  my big thick dick deep in her pussy, pop her cherry and ram over and over on her desk and impregnate her by force. But I was to lovestruck to step up and act. She slid the cock ring down my shaft and stopped right the base. It started to hurt within the first 10 seconds. Hnnnnggghhhh I groaned in pain as my thick dick restricted against the pure diamond ring, as it cut of most of my circulation. Now pet you will do everything I say or I won't have this sweet ass Twilight purred in my ear. I just nodded too enthralled with pain to talk. Okay no pay down she commanded. I laid down on the cold hard floor as my cock still stood straight up at attention. Well it see.s like little Raiden will have to endure some pain tonight.twilight laid down in front of my huge cock slowly taking it in her between her wet lips.she only bobbed her head at the tip swirling her experienced tongue around the head. It was enough to almost send me over the edge. I panted heavily. Damn.........ugggghhhhhh..............you're.......so.....uhhhhhhhhhhhhhh good at this I groaned she moaned around my shaft in respone as she went further down, her lips hitting the cock ring. Whoa she had no gag reflex. She tickled my big swollen balls making me shudder. Bobbing her head faster she was dangerously close to pushing me over the edge. I clenched my fists tightly as I fought back my orgasm. This has been going on for about 6 minutes speeding up her sucking and slowing down, then a relapse. She finally stopped her skillful deepthorating and teased my silt with her tongue making me groan in pleasure. Okay pet you pass your first test. Now time for you to pleasure your mistress. Groggily stood up and took the rest of my clothes off. Oooohhhhh nice abs Twilight purred in great lust. I smiled slightly tracing my fingers over my eight pack. Twilight sat on the desk chair with her legs spread, well pet I'm waiting. I sighed in distress with my straining erection and big swollen nuts. I bent down spread her labia apart rubbed the nub of her clitoris with my middle finger gaining a cute uhhhhhh from the  princess. I stuck my tongue inside flicking her inner walls, pinching her clitoris hard and gentle in a rhythm. This technique wouldn't make a girl last long. Her moans and whimpers getting more louder and frequent as I sped up. Oh ugh mmmmmmmhhhhh she moaned. As I shoved all four of my fingers inside her wet sweet pussy. Oooooooooohhhhhhhhh CEEELLLEEESSSTTTIIIA!!!!!!!!!!!!!!!!!!!!! She screamed out in orgasm as my fingers were drenched in her feminine juices. I licked it as I tasted kinda like grapes by surprise.  Oh pet or should I say daddy your deserve your reward. The princess of friendship bent over the desk wiggling her fat ass side to side . I took the cock ring off sighing in relief as I felt dick being freed from the diamond restraint. Little raiden was an understatement. I rubbed the head of my cock against her lower lips. Twilight whined as I teased her. Oh take your time I'm still a virgin. Oh that's a surprise flash never hit that, of all the times I saw them making out at school the; the passion never progressed. I slid in slowly breaking hearing her gasp loudly. Her body was pretty sensitive which was to my advantage. Her fat booty jiggling as I sped up my thrusts, breaking her hymen in the process. EEEEEPPP she squealed as I pushed in further the tight pussy being stretched by my girth, her sopping wet pussy making me groan in satisfaction.  Her inner walls clenching around me. Little Raiden was having the time of his well my life. Twilight began to push her ass against my hips in sync as I pumped faster. Ooooohhhhh DAADDDDYYY FAAAASSSTTTEEEERRR SHE screamed. Whimpering each time I thrusted.  I bit my lip nearing my nut busting orgasm. Twilight 's body quivered as she orgasmed coating her juices around my cock. Ooooohhhhhhhhhhhhhhh RAAAAAIIIIIDDDEEENNNN fuck make me your bitch impregnate me with your divine cum she screamed . On that note I squirted about a whole gallon of semen her pussy flooded with my baby batter. I pulled out with my still hard cock, her dripping pussy as my cum made a puddle between her feet . WOW that was amazing she said exhausted. But I still had bursts of libido. I picked her up holding her up by her booty cheeks. She squealed as I brought her in for a kiss. Our chests touching, her nipples rubbing against my pecs. My still hard dick prodding her semen filled pussy. Oooohhh ready for more she purred. Bouncing her ass off my legs my whole dick going in and out making the sound of ass clapping, moaning, whining and whimpeing quite clear even outside the room. The sound of her ass claping against my thighs. Mmmmm-hmmmmmmm she moaned as another mindfucking orgasm. She laid her on my shoulder bringing me in for a loving embrace as I continued to fuck her. Her whimpering and whining got more frequent. Nearing my final orgasm I bounced her on my dick faster, a speed that rivals a piston in a race car engine. Her cute little moans making my heart sink. Ooohhhh you're so close baby? Uuuuhhhh yeeeeaaa I groaned. Aagaagggghhhhhh fuuucckkkkk I said as my dick exploded my whole in spasm as load after load of my cum painted her whole womb white. Twilight passed out from the pleasure. I felt like passing out myself but I had business to attend to. I sat her in her chair, put my clothes on and walked out . the door hitting something or someone to the floor. What the fuck, spike the fuck u doin'? I asked nothing he said nervously