Often stands for "Remastered" or "Retail Marker," indicating the quality or the source of the file.
Alternatively, "sone552rmjavhdtoday022822" could be broken down into codes where "sone" is a Korean band (SonE), "552" as a location or code, "rm javhd" as an action. But without more context, it's hard. sone552rmjavhdtoday022822 min exclusive