Old save files from the unpatched Japanese version are generally not compatible with the English-patched version. Always start a fresh new game to prevent crashing. If you want to dive deeper into this classic title,
Most players looking for the "PSP experience" usually opt to play the PC/Steam version for the story, or play the PSP version in Japanese using translation guides.
on PSP , fans can experience the full story in English through alternative versions and fan projects. The most comprehensive way to play on modern devices is via the PC patch, which incorporates all the exclusive content originally added to the PSP version. Gakuen Heaven Translation Status