(You) realize that you havent had a medical checkup in like, years
Koyori overhears it,mentions the state of the art equipment in the lab and tells you she will do it if you help with an experiment
You take on her offer
Fast for 12 hours, pee on a cup,get your blood taken, in just ten minutes you get some results. Koyori mentions everything is great at first glance
But she can go a bit more in depth if you want. She has a weird satisfied look as she says this
Still say yes, you are kinda worried of cancer.
She takes some more blood, a few hairs and gives you a sandwich (homemade) so you dont feel like shit
Results come back, Koyori bites her lower lip, breathing heavily as she tells you its all in fantastic state, your genes are amazing and your immunologic system is top notch
Only one last test, it might be ''intrusive''. She starts a recording device and puts it on the table next to you
Agree anyway. She kneels in front of you and makes you drop your pants. Instant Erection
''Top Notch Libido'' she says, as she inspects your erection,salivating and sweating ''Superb lenght, girth and even curvature''
Plants her nose in your sack and starts huffing your musk. ''Unbelievable Pheromone and Semen production''
Puts a condom on you and drops her pants
As you poung her, she screams ''AMAZING TECHNIQUE''
As soon as you cum, she makes you pull out and catches the condom, entranced with your ejaculation
''Exceptional ejaculation volume'' she barely gets a sample on a machine as she greedily drinks the rest
''More than twice the spem count of a normal ejaculation'' she bends over the table, shaking her ass for you
You obligue, pounding her again, she can barely breath yet she keeps narrating
''SPERM HIGHLY MOBILE, AGRESSIVELY WANTS TO PASS ON ITS GENES''
The rest of her clothes go fliying, you keep going
''COMBINATION OF FACTORS FORCES OVULATION, MULTIPLE OVUMS MIGHT GET FORCEFULLY RELEASED''
Your hips are a blur, as she screams, moans and squirms, lost in pleasure
''RISK..OF..FUCK,...RISH...IMPREGNA-IMPREG-SHIT...NATION...INMI..MINNEEEENT''
You both finish, dark spots dancing in your vision as you pump everything you have inside of Koyori
You almost black out, your knees feel weak, Koyori is still trembling after her orgasm, the floor below her drenched with her girlcum
''Mul...multi-multiple Ovums fertilized'' she is barely concious, twitching as she tries to reach her recording device
''Experiment is a sucess...Anon is Dr Koyori's most compatible mate''
She takes a look at you, and flashes a smile
''Projected offspring from the experiment: Three''

Edit
Pub: 09 Jan 2023 21:26 UTC
Views: 505