Authentic units will have the PPPE227 and UN020234 codes clearly printed on the original box and often stamped on the underside of the figure base.
The term "better" in the product code might imply that this particular version of the figurine has some improvements or unique features compared to previous releases. These could include: pppe227 asuna hoshi un020234 min better
Current protocols struggle with "noise" in miniaturized hardware. The "Min Better" Hypothesis: Authentic units will have the PPPE227 and UN020234