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Chapter 21
by
lew54321
How does the rest of your evening go?
Late Night Preparations
There were two things out of all this new information that you were most concerned about.
Achievement: Upped your game
Special: Keep it up! (user upgrade)
You could now see a new plus icon next to your name on your status menu. Clicking it brought up the special item that you had picked up from the achievement.
Keep it up! (user upgrade):
Permanent 50% decrease in time to the User’s refractory period and 50% increase in semen production.
Tap to confirm use (Warning! may cause mild discomfort during the application process).
This was something you absolutely wanted but the warning was slightly freaking you out. Your finger hovered over the confirm button before you finally took the plunge.
Confirming user upgrade. Applying upgrade.
You felt a small tingle travel down your arm from your phone before the feeling continued to move across and down your body. The sensation finally stopped as it reached your groin before slowly increasing in intensity. You were **** into a fetal position on your bed as waves of pain washed over you until it was almost unbearable. After what felt like hours but was only a few minutes, the pain slowly dissipated before you felt comfortable enough to sit up. Mild discomfort my ass! That was a lot of a lot more than mild discomfort. You reached for your phone and saw a new notification waiting for you.
Upgrade applied. Refractory period successfully decreased by 50%. Semen production increased by 50%.
Due to this being the first user upgrade, pain caused may have had an increased intensity. Upgrades in the future will have a lower intensity.
The update was a bit too late in your eyes but there was nothing you could do about it now. You probably would have picked an upgrade that didn't affect anything anywhere close to your dick if you could have a do-over but what's done is done.
Now came the other concerning point.
Achievement: 2 for 1 deal
Special: 1-time use - Double time
You could see that unlike the user upgrade, this special could only be used on subjects and not yourself. The plus icon no longer appeared next to your name but was now next to Mom, Sarah, and Rebecca’s names.
Double time:
Once activated on a subject, the rate at which the subject’s timer increases is doubled for the following 60 seconds.
Can only be used on one subject and once the 60 seconds are up, the special will disappear.
Although it had to be used on subjects, it looked like you couldn't use it on a person to speed up their registration time, only their levels after that. You decided to save it for a more important occasion. You had nothing planned for it but it felt like a waste to just use it straight away.
You thought about going to talk with Sarah or Mom without the power-up in the hopes of adding even another second to their totals but decided against that for now. Mom probably wouldn't even talk to you considering her earlier sheepish attitude and you still didn't really have a reason outside of dinner to start touching Sarah. It looked like both of these issues would be solved if you just let the KDK do its thing overnight and if at that point it worked, there would no longer be any doubts left in your mind that this was real. Thinking back to the amount of pain you had just gone through earlier, those doubts were pretty small.
Unlike before dinner, you started working on some of your assignments that you had been procrastinating on. You looked at the English report you were planning on going through with Emma and decided to go over that to hopefully help her out a bit if she needed more help. You had had English homework earlier in the week but this final report was something that contributed a fair amount to your grades.
Thinking about Emma coming over made you realise that your room was in a bit of a mess. You knew where everything was but the randomly thrown around clothes and the scattered junk probably wouldn't make a good impression on any visitors.
Between going through homework and making the place look nice you managed to waste a couple of hours before you considered the jobs done. You even managed to find a proper stopwatch that you had completely forgotten that you owned. You looked at the clock on your desktop and saw that it was just after 10 pm. Although it was still early by your standards, the almost debilitating pain earlier coupled with the rigorous cleaning you had just finished, left you feeling exhausted.
You dragged yourself to the bathroom down the hall to quickly freshen up, before returning to your room and flopping onto your bed. It didn't take you long before you felt your tired mind slowly drift off.
Author’s note: Hey all, hope you have been enjoying the story. There's been a lot of setup so far with very little action so I’ll promise to get to that soon but, you can count this as a sort of end of a 2-day prologue. I've also created a Patreon where I will be trying to publish an extra chapter ahead of my 2-3 chapters a week schedule. No content will be removed from Chyoa. It's just if people want to read more a little earlier or just help me out.
https://www.patreon.com/KDKFiction
Thanks for the support so far :)
Friday Morning
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Kink Development Kit
An unknown program leads to kinky encounters
A fetish app based story inspired by others of the same genre. Follow the protagonist's story after finding and using the app for their own selfish desires.
Updated on Mar 29, 2026
by lew54321
Created on Feb 28, 2021
by lew54321
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