When examining , one must look at the waveform. A quick analysis of the sample tracks reveals:
So, what does the "-RJ01301416-" part of the keyword mean? After digging deeper, we discovered that this code is likely a catalog number or a identifier for the game. In Japan, visual novel games are often released with a unique catalog number, which is used to identify the game in online stores and databases. Kouen No Himitsu No Game Asobi -RJ01301416-