not sure what to do from here...

looked around in the zip file and followed "Graphics/BE/4/swimsuit/happy.webp" (its cut off in the screenshot) but there is no "swimsuit" file only a "swim" file and the images inside are Honoka's default uniform in 20 different expressions. Am I missing files? does this part of the game need updating? not sure, hopefully this helps anyone and or development :) thanks for reading

This scene you've played is a size 3 scene not size 4. Setting the size on Debug Mode or replaying scenes with incorrect sizes can lead to errors like this as not every outfit will be available for each size. You can fix it by setting size to 3 and replaying this scene the way it was intended

As for the files itself, as the game is still work in progress so some of the outfits will have placeholders. They exist for implementation purposes so game will already know to call them in a script and show them in game when they will be completed