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Chapter 453
by
lew54321
Wakey Wakey
Rise and Shine
Normally you liked to stretch once you were fully awake but after getting your bearings and realising you had happily fallen asleep in Lucy’s room with the new rules you had set in place, you noticed that your body was slightly locked in place where you lay.
You had fallen asleep facing Lucy and it seemed you had moved to now do the opposite, now facing your other sister. Lucy had an arm draped over you while she must have been holding you in the night and with her tits pressed firmly into your back, you could guess you’d stayed touching one another for pretty much the entire night.
You looked at Sarah in front of you and she lay facing you with her head resting on one of your arms, thankfully not cutting off your circulation and leaving your arm numb. She was curled up next to you and even with her going to sleep earlier than you and Lucy, it looked like she wasn’t going to wake up any time soon.
You were expecting to be bored while you were trapped between the two, only getting to enjoy the sight of a nude Sarah but as your eyes wandered, you saw your phone on the bedside table behind Sarah.
This looked to be the only time you’d be able to check the KDK without either of them noticing so with only a small stretch of your arm, you managed to grab your phone and hold it while essentially hugging Sarah. It was a bit awkward to check the details like this but you eventually got into a comfortable position and saw that there were notifications waiting for you, some expected and others not so much.
Change detected. Click here to view details in the KDK app.
Sarah Cooper level up! 8 points received. 5XP
Status updated. Effects available after the subject has rested/User confirms.
Achievement Unlocked! - Down for the count - 2 points received.
View Achievements tab for more details.
Achievement Unlocked! - Bump in the night - 6 points received.
View Achievements tab for more details.
Achievement Unlocked! - Generous Lover - 2 points received.
View Achievements tab for more details.
Name: Sarah Cooper
Role: Subject, Twin Sister
Age: 18
Kink: Free use (level 4 - 23887/200000 seconds)
Distance: 1m
Levels:
Level 1 - Unlocked - tap for more details.
Level 2 - Unlocked - tap for more details.
Level 3 - Unlocked - tap for more details.
Level 4 - Unlocked - tap for more details.
Level 5 - ???
Level 4 details
Passive -
Will allow the User to touch/use the subject's pussy however they wish. The more the User uses them, the more aroused/attracted they will be to the user and the acts they are doing.
Active -
Pain Away
_Condition(s):_ None
Effect(s): Once activated, The subject will feel no pain or discomfort for the next 60 minutes from sexual-related activity and instead have this converted into pleasure. This includes vaginal, anal, and/or oral activities. Two further examples include no pain when the subject's virginity is taken and the subject's gag reflex also no longer existing. If any genuine harm is being caused to the subject, they will be aware of this and will alert the user. Any minor injuries caused during this time will heal quicker for the subject.
_Cooldown:_ 4 hours
Achievement: Down for the count
2XP, 2 points - Make a subject go **** from just sexual pleasure
Special: +1 perk point
Achievement: Bump in the night
5XP, 6 points - Have you and a subject orgasm next to an **** subject
Achievement: Generous Lover
2XP, 2 points - Have 3 subjects orgasm between your own orgasms
Special: Charm upgrade(user upgrade)
Charm upgrade(user upgrade)
Increases general charm of the recipient of the upgrade.
Name: Max Cooper
Role: User
Age: 18
Level: 8 - 489/560xp
Points total: 210
Perk points: 2
That felt like a lot to unpack but you had nothing else available to do at the moment so you reread everything to figure out what you had unlocked and what was now available for Sarah.
You had expected Sarah’s passive effect given the way her previous ones had been going, letting you touch and use more intimate parts of her body as you pleased. Sarah had already told you she wanted you to use and fuck her before you got the effect so your own moral issues about now fucking her weren’t as big of a deal as they could have been. Her active effects however, were always a surprise and you were glad it actually didn’t seem to push Sarah even further towards her wish of being completely at your command.
Even after everything you had gotten up to last night, you still felt your cock twitch as you thought about how good of a blowjob she could give if she didn’t have to worry about her gag reflex. It did come with a weird issue in that sometimes, Sarah would feel the discomfort, and other times she wouldn’t depending on the situation, something she was bound to notice eventually if you let it go on for long enough.
You didn’t really have a timeline for when you would tell people about the KDK but something like this was something to consider and while you could get away with using it once or twice, you wanted to think on it with Emma at your side if you planned on using it more than that.
Other than the level-up, you had somehow managed to get 3 new achievements that came with an extra perk point you needed to spend and a charm upgrade, one of the stats available for you in the shop that you hadn’t bought or tried out yet. Like with the intelligence upgrade, you were still hesitant to use anything that affected you mentally and you weren’t in a huge rush to use it right away, saving the upgrade until a better time presented itself.
You still had a few other effects you hadn't used, Tongue Twister and the NPG Addon - Cuckold being the ones you had left unactivated. You felt the same way about them as the charm and wanted Emma’s input before you just used them like you were planning on doing, wanting a second opinion to make sure you weren’t making a mistake.
Other than that, there were no new notifications but while your mind was on the perk points you had, you were quickly reminded of the large number of points that you had now saved and now that it was a Monday, the weekly shop sale should have updated and resented you with an item that would likely benefit you greatly.
With the thought, you instantly navigated away from Sarah's profile and went to the shop, seeing the sale and looking at the contents.
Author's note: I'm back :) Had some format heavy chapters recently so if there are any issues I will try to fix them when pointed out :)
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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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