If you're using mods, they might be causing the crash. Try disabling or removing mods to see if the game stabilizes.
: Koikatsu is notorious for high RAM usage, especially when modded. If you have 8GB of RAM or less, increase your Windows pagefile size to at least 20GB to prevent "Access Violation" errors caused by memory exhaustion. koikatsu crash fix
This guide addresses common causes and fixes for " Koikatsu Party If you're using mods, they might be causing the crash
If your game crashes during loading screens, your system may be running out of physical RAM. Manually increase your Windows Virtual Memory (paging file) to at least 16GB–32GB . If you're using mods