I had some trouble finding good sales data for Like a Dragon: Ishin!, so I'm going to use the metric of "all-time peak concurrent players" for Steam. According to steamdb.info Like a Dragon: Ishin! had an all-time peak of 8,461.

For YES to resolve, Like a Dragon Gaiden: The Man Who Erased His Name, must have an all-time peak of 8,462 concurrent players. I'll wait a week from release for playercount to drop, and then resolve the question.