KKSEv3 is release now

Known Issues (Including Older Scenes & KKSE v3 Update)

Since KKSE is significantly different from the original KK version I was using, all SDs from before New Management may have some predictable flaws.

Transparency Issue: Scenes with a fade-to-black effect may show a semi-transparent oval caused by insufficient sphere transparency. You can fix this by deleting the sphere object or reducing the alpha value in the timeline from 0.5 to 0.

Physics Collision Issue: Interactions between body parts and the chest may cause physics collision problems. There is currently no solution, but such scenes are rare.

Binding Position Issue: Some scenes using NC and sphere binding may have sphere positions deviating from their original positions. Fixing this is complicated and not recommended.

Missing Mods in Older Scenes: A small number of older scenes may have missing mods after upgrading to KKSE v3.

High-End GPU Crash (Rare): In very rare cases, high-end GPUs may crash KK. This happens because KK uses a very old engine — the more advanced the GPU, the more likely unexpected issues can occur.

Character Card Detection Issue: If you open both the main program and Studio at the same time and create a new character card, Studio may fail to detect it.

Overall Stability: Most SDs work normally without visible issues. For problematic SDs, deleting or making male characters transparent, or removing sphere objects usually resolves them.

KKSE is currently being updated to KKSE v3. These issues are mostly minor but annoying. However, the update greatly improves scene creation, so upgrading is recommended. That said, KK is probably close to its technical limit. In the future, aside from mods, the update frequency of KK itself will be reduced to minimize errors caused by modern hardware.

What is KKSE?

KKSE is a highly lightweight version of Koikatsu that I have modified. I removed all unnecessary elements, keeping only the always-useful plugins and mods. It is the same version I use, so it fully supports all my SD files.

This is a version I personally recommend.

Who Should Use KKSE?

This is a version I recommend. If you have no idea which KK version to use, I suggest trying KKSE. However, if you already have a customized KK setup that you're happy with, there's no need to download it.

If you don’t know what Koikatsu is, don’t download it. Extracting files is as basic as tying your shoes—I’m not your IT support. I focus on creating content, not troubleshooting issues.