https://wccftech.com/nioh-2-1-24-cross-save/

A new Nioh 2 update is now live on PlayStation 4, adding cross-save functionality with the soon to be released PlayStation 5 version, balance adjustments, and more.

The new cross-save management function introduced in update 1.24 will allow players to transfer save files from the PlayStation 4 to the PlayStation 5 versions and vice versa.