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KK_Pregnancy v1.0 / Pregnancy mod (Patreon)

Published:
2019-07-05 20:37:10
Edited:
2019-07-17 14:41:06
Imported:
2026-06
Tags:

Content

Plugin that adds pregnancy to the main game and as a maker option. Busting a nut inside on a dangerous day has a chance to make the girl pregnant.

Gameplay summary

After a few days a pregnant status icon will appear on character list and the girl will stop having dangerous days. Over the next x weeks (configurable in plugin settings) the belly will grow, and then the girl stop coming to school for some time (she will eventually return to normal).

Configuration options

The plugin can be configured in plugin settings and per-character in female chara maker. The default conception chance (fertility) is around 30% and can be changed per-character. Conception can be completely disabled per-character and globally.  Pregnancy settings cannot be changed from class maker to prevent cheating and have to be changed from main-menu maker.

Limitations

Because the pregnant effect is made by manipulating bones, there are some limitations and potential issues. On some characters the effect might look bad, especially if they use many ABMX sliders around the belly area. Clothes that use skirt bones (skirts, dresses, etc.) can look glitchy, which is sadly unavoidable without tweaking each character manually in maker. Clothes that stick close to the body will work best.

How to install

Needs BepInEx v4.x and latest BepisPlugins, KKAPI (v1.3.6.1) and KKABMX (v3.2.3). Update these as needed. Make sure to remove any old versions of these mods if you have them (KKABM_Core, KKABM_GUI, KoiSkinOverlay, KoiClothesOverlay).

Download the .dll below.

To install copy the dll to your BepInEx directory.

Check if there are no warnings on game startup, and update plugins specified in the warnings if any are shown. Pregnancy options should appear in plugin settings once everything is working (not in studio).

Source code 

Files

Comments

Jason Wright

How I change the time for maternity leave?

Ancestral

I'm really impressed with each new mod release, how the base gameplay is enhanced and the mod smoothly integrated as if you was the original maker of the game :o A lot of appreciation and respect, really!

Omni

This is great thank you for your hard work!

Man Lok Li

Great to see your new work and Thank you! But i found that the warning "KKABMX.core required by KKPregnancy is outdated, at least v3.2.3" still pop up even though I have already download and installed kkabmx 3.2.3 via the github link in the description. Did anyone have the same problem too?

ManlyMarco

Make sure you remove old versions of KKABMX (KKABMX.Core.dll and KKABMX.GUI.dll)

Darknest One

is there a way to change a pregnancy chance in existing class? Spent couple of hours and still cant knock up anyone

ManlyMarco

Not currently, at least not without cheating with the editor. You can go to plugin options and turn on showing the pregnancy indicator early (it will show if girl is pregnant after advancing to the next period). The chance is fixed per H scene, so it's best to cum inside once and exit the scene, then start a new one and repeat.

Nero

Have the same problem and it just won't work....I can't even find the KKABMX.Core.dll.

ManlyMarco

KKABMX.Core.dll and KKABMX.GUI.dll need to be removed, they are now merged into a single file KKABMX.dll

Nero

Still the same error...Does Koikatu version matter or is there a known conflict?Can I see some logs of the game about the error?(kind of got into koikatu recently and I want to use this mod).

ManlyMarco

You can turn on system console in plugin settings, make sure to turn on unity logging as well. Alternatively check the file koikatu_data\output_log.txt

Nero

You totally lost me -.-''.I turned the system console on but the unity logging i don't even know how to.I was able to find the files KKABMX in the console but they won't delete.

ManlyMarco

"Enable Unity message logging" in plugin settings. I just released an update to KKABMX with an on-screen error message if an old version is detected. Try getting it and see what happens.

Nero

The same,this time with little more information,I enabled the ''unity message logging'' I found out 2 KKABMX GUI 2.3 and 3.2.4.How do I remove the old one?Like I don't think that I can remove it with the system console,I tried it won't work because the game needs to restart.Even so in the ''unity logging'' the error it's shown as ''Old version of ABM found!Remove KKABMPlugin.dll and KKABMGUI.dll.''K I removed them and restarted the game looked in the log.txt to see any more errors,there is an error for another dll but it doesn't matter.Started the game again,there is no more errors and the game is taking the KKBMX 3.2.4.Thank you for your assistance :D.

Vincent Fan

is that mean cum inside multipule times in one scene doesn't make any different - it is just inside cum yes or no?

ManlyMarco

Correct, anything higher than 0 has the same chance. To get a higher chance you have to cum inside once, exit the h scene, start a new h scene, repeat.

Dave

i get out of date error on load for the mod

ManlyMarco

You have to update all plugins mentioned in the installation instructions.

Dave

all drag and drop in the bepinex folder

ManlyMarco

Yes, and what exactly is the error you are getting?

Dave

turned my english translations off and it was saying out of date kkambx core

Dave

sorted instead of letting it overwrite i hit skip by mistake so now this might get interesting all 3 classes full and there all after the male

Vincent Fan

I would like to ask how much chance it is for the current setting? based on my test it seems like <5%, as I tested 25 girls but no one actually got pregnant

Vincent Fan

And the description of "showing the pregnancy indicator early" in the settings said it will show in the end of the day, but you said it is the next period. which one is true?

Vincent Fan

Oh I guess I got it - this mod doesn't count the inside cum to public girls in kPlug - only the main girl you entered the H scence with. is that correct?

ManlyMarco

Currently it will show at next period already, but it might change to the end of the day in the future. If kplug is swapping girls around then that is most likely going to confuse the mod.

ManlyMarco

The default setting is 30% per H scene.

TheEastFace

[Error] Could not load "KK_Pregnancy.dll" as a plugin! [Debug] Could not load type 'KK_Pregnancy.PregnancyCharaController' from assembly'KK_Pregnancy, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. Could not load type 'KKABMX.Core.BoneEffect' from assembly 'KKABMX, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'. I don't know what happened I deleted the old version of the file but it still didn't work This is the message of hints. I hope you can help me.

ManlyMarco

Make sure you have all of the required plugins installed, including latest bepisplugins.

Colvion

Im not having any warnings, or anything appear in the plugins menu (or the character maker for that matter) any help on what might be wrong on my end? Im using screws repack 8 if that helps

ManlyMarco

Make sure you have all of the required plugins installed, including latest bepisplugins. If it still doesn't work then check your koikatu_Data\output_log.txt for clues. If you can't figure it out send me that file in PMs or on the discord server in #help channel.

zed (edited)

Comment edits

2026-09-05 04:00 Hello, friend, your plug-in is great and I like it very much, so I would like to ask if there are many lesbian couples in one scene in the game?
2019-07-18 15:28

ManlyMarco

Sadly no. I think there's a way to add girls to the current h scene and make them do the lesbian animations in kplug, but I'm not certain.

Dave

didnt know you could get the teachers pregnant

ManlyMarco

I never tried, but I doubt it works.

Vincent Fan

It seems like the pregnant lable in the roster is not correct - some of them are not if you check the F4 list

Akiix

if you have girls in different classes you all the girls in the same seat will get the pregnant mark if one of them gets pregnant

Chris Rasmussen

Finally got it working after a week of reinstalling and deleting files

ManlyMarco

Yes, it's a known bug. Will get fixed in an upcoming update.

Akiix

and another thing if you download the newest hf patch with all the improvements the mod wont work even after you replaced the KKAPI, KKBMX and the plugins but if you dont install all the addons it will still work. Sorry i didnt feel like going through all the mods to check which one interrupts it

Tobias Weikl

ICh bin zu dum um es richtig zu machen würde mir es jemand Schritt für schritt erklären ?

Tobias Weikl

bei mir heist es plugin macro.kkapi reqired byKKABMGUI is outdated v 1.3.6.1 is needed

ManlyMarco

Download latest KKAPI and KKABMX from links above and put them inside your BepInEx folder. Then remove KKABMPlugin.dll and KKABMGUI.dll your BepInEx folder if you have them.

Tobias Weikl

Das spiellädt jetzt mit Belpnex aber im spiel passiert nichts

Tobias Weikl

brauche ich auch After school dazu ?

Tobias Weikl

Vielen Dank es funktioniert jetzt

Rain Kasanuvon

Settings and character sliders aren't showing.

ManlyMarco

Get the latest versions of this, KKAPI and KKABMX. The latest HF Patch has them all if you want to do it the easy way.

Enderai

I can't get it to work. I've downloaded and installed latest versions of HF Patch and the BepisPlugins, but I can't get character sliders and settings to show up. Can you help me?

ManlyMarco

Do not install any single plugin updates after installing the latest HF Patch. Plugins released after it are built for new BepInEx version making them incompatible, and they are not considered stable. The pregnancy mod is included in HF Patch so you don't have to install anything else. To your install simply install latest HF Patch and let it remove all old mods.

ManlyMarco

Unfortunately it's not easy to fix this. Each pose would have to be manually adjusted, similarly to how stiletto does it. I'll add it to the todo list.

Ersatz Artifex

I haven't been able to find an explicitly stated answer of whether or not the Story Characters (from the 'Story Character' seating tab) can get pregnant. Not to including pulling the character (after editing out of game) from a card, loading the addition to the seating chart and transposing it onto the story character. Does the mod effect those characters as well? Thanks.

Jamovitz Caulton

Might I suggest adding a fetus moving around effect on the stomach?

Ersatz Artifex

I suggest, add an overlay texture of varying levels on the abdomen, triggered by how far in the pregnancy they are. Such as a darkening of the belly button (and/or popped out bellybutton morph), nipples, and a center-line going up the belly from the crotch. After pregnancy, leave stretch marks, and darker nipples. (Optional of course)

Ersatz Artifex

Something more advanced would be figuring out how to leverage the ejaculation mechanics to create nipples that lactate (1/2 or 2/3's into pregnancy and leave on afterward to show she's now a mommy with a baby at home). I wonder if there's a way to retool the male liquid with a lighter weight, narrower stream and force/arc for longer distance. Or use the female ejaculate (which might be easier). Link a spray to come out of a nipple when pulled (medium density), licked (heavy) or when a breast is treated roughly (light), and have it spray out of both breasts during orgasm.

Ersatz Artifex

Last idea, create a field that is populated randomly upon pregnancy that will determine how the pregnancy plays out. Such as High, Middle, and Low Carry pregnancies. The current pregnancy type can use the Middle Carry morphs. Then retool the morph so it bulges up or down for the other two. It would create greater belly variations while keeping the results out of the players hands. If you have a harem of pregnant girls running around, different belly types would add spice compared to a one-belly-fits-all standard shape.

ManlyMarco

All good suggestions, thanks! As it is now, the plugin does not use any morphs, instead it scales and moves the bones which makes it very limited in what it can do (no way to pop out the belly button or change shape of the belly too much for example). Adding morphs would work except for interference with uncensors and clipping though clothes, so it's not easy to do. Lactation and other overlays were already on my list, but I didn't think about using actual particle effects. I'll write the suggestions down, thanks again!

ManlyMarco

It would be a very cool feature but it's sadly not possible with current setup. Thank you for the suggestion though!

ManlyMarco

They aren't affected since even if you do get them pregnant their pregnancies will not progress at all because they aren't treated as normal girls.

Ersatz Artifex

A pity. Hmm, hypothetically speaking. Say you pull in the Rina as a 'Transfer', and "Accidentally" get her pregnant. Is it possible to have the game reference the pregnant Rina version as the model for the Story Character Rina instead of the embedded normal resource? As to not break immersion, have the Transfer Rina not spawn during a time period were the static story version is up. Basically, anything you do the Transfer Rina also applies to Story Rina, to include clothes and physical changes you may have made to Transfer Rina. Making direct edit changes to Story Rina would not show up as its resource is unused. To make it user friendly, have the mod first check if a character with a Story character name is among the Transfer characters. If true; Use that characters model resource for the Story character. If false; use the default model resource. As it's own separate mod, it would be kick ass in it's own right. If possible, not only would it get around the infertile Story NPC issue, it would also make them more part of the game and not something that appears and disappears all the time. And thank you for your time.

ManlyMarco

That's actually a really cool idea! Having the story characters walk around sounds doable, but it would be challenging to keep them in sync with the story line because of how Illusion saves progress (it's all hidden away in script files). If it's without the sync, I should be able to do this without too much of an issue (famous last words). I'll add it to the pile of things to do.

Ersatz Artifex

Yah, Syncing transfer characters for final immersion would be a 'final step' kinda thing. It's not like I'd be crushed if I saw two Rina's in the same room. Initial mod would be forcing Story characters to poll the modelling resources of a Transfer character with identical Given and Surnames, if found. First update, do likewise for all the other supporting characters seen in cut scenes. I think the tedious part of that is memory matching the corresponding Transfer character card name with their generic cut scene names, (like cheerleader A). I don't know about you, but I'd be laughing my ass off watching those scenes where every single student is pregnant but no one seems to be willing to acknowledge that fact. Then tackle the challenge of getting the Story character unique dialog H-scene comments to override the normal Transfer character comments. The last step would be the 'no doppelganger' fix. I'm sure you got a lot of things your working on, so maybe this is something you could run by modding community and see if they'd be willing to take a crack at it. Looking forward to your seeing your next work, the pregnancy mod alone has made this game funny as hell as it's been turned into one big game of Wack a Mole, or rather, Wack a Womb. Hehe, probably why seeing the Story characters immune offends. It's like, "You 6 chicks are messing with my perfect score! Ovulate damn it!" (lol)

ManlyMarco

One big issue that I can think of is that the story character personalities don't have any lines outside of h scenes and story events, so a different personality would have to be used in school.

Taufiq Suraman

i use the hf but there is no pregnancy icon

Taufiq Suraman

so the pregancy only have on the create not edit?

Deadmann

Hey i have the problem that all the pregnancy effect are removed in h scenes, something like abmx reset is reported on the top left, any idea how to stop that from happening ?

ManlyMarco

No idea, nothing should show a message like this. Are you using kplug? That's the most likely cause.

ManlyMarco

All cards have pregnancy enabled by default. You can only change these settings in main menu character maker, not in class maker. You can turn off pregnancy globally in plugin settings.

Misaka

Could this mod affect the teachers or only girls?

ManlyMarco

Currently teachers are not supported.

bone hea

hey could u change the mod to allow to submit a custom time number in the speed of pregnancy because i would like to make it speed of the end of the period approxamitly so you can watch the belly and other things grow

ManlyMarco (edited)

Comment edits

2026-09-19 00:00 You can configure how long the pregnancy takes in plugin settings (game settings &gt; top right corner), search for pregnancy. It will still take at least 4 weeks though.
2020-07-27 15:12 You can configure how long the pregnancy takes in plugin settings (game settings > top right corner), search for pregnancy. It will still take at least 4 weeks though.

You can configure how long the pregnancy takes in plugin settings (game settings > top right corner), search for pregnancy. It will still take at least 4 weeks though.

bone hea

thanks for responding but knew that already jest was hoping that you could add in the option to edit it even faster if you want. but thanks again

Mace

Other than the character leaving for a while and them getting physically pregnant, what else does the mod do?

ManlyMarco

Try pulling on the breasts in h scenes when pregnant and hovering over the status icons in roster screen.

SpazistSun

Is this mod included in HF patch, and if not is it compatible with the mods in that patch?