>>536525398
The figure of 19.5 million is given by VGS Wiki. All numbers for all gaming platforms and regions in the table are confirmed by links to third-party sources, so the correctness of the final summ depends on the correctness of the amounts in each of the sources. The sources include both official articles from Famitsu and IGN, as well as data from aggregators such as PlayTracker which are capable of only a very rough approximation. Yet it is also worth noting that in the table, most of the links are given to articles from 2014 to 2022, I think this is also important. Who knows how much copies the Goddess actually sold.
[spolier] Perhaps the figure has long been more than 20 million... [/spoiler]