While official patch notes for specific scene releases are often aggregated, this version of the update focused on:
For the "CODEX" release specifically, this update is cumulative, meaning it typically requires the base game to be installed first. It is designed to overwrite existing game files to bring the version number up to the April 2021 standard. Yakuza.6.The.Song.of.Life.Update.v20210421-CODE...
: Resolved various crashes that occurred during specific cutscenes or when transitioning between Kamurocho and Onomichi. While official patch notes for specific scene releases