Thank you for your report. The issue has been fixed.
Please try "Delete Data" again, and you should be able to start over normally.
I found the cause of the issue. It was caused by the [Auto Save] system. When an item was used and its quantity changed, the game would automatically save the record. However, other data was not saved at the same time, which led to this problem. This issue has now been fixed. Thank you for your feedback.
1.2.3. have been fixed.
4. I’m unable to reproduce this issue; it may be caused by incompatibility with save data from older versions.
5. Currently, only the items in the title screen’s endings are implemented. The remaining H scenes are still in development—thank you for your understanding.
Thank you very much for your enthusiastic report.