Thanks for bringing this to my attention. My friend and I looked into this and discovered that some antivirus scanners consider games made in Ren'py to be a threat because it is not well known. We tested other Ren'py games, including the provided Ren'py tutorial, and there are a few antivirus programs that have a problem with the renpy.exe file of each game. However, the scan results are a false positive and the file is safe to run. One explanation for this is because not all antivirus scanners are familiar with Ren'py and another is because Ren'py games require two .exe files in order to run.
Thank you for showing interest in my game!