Thread:Deyuaru/@comment-26187335-20160327091107/@comment-27105226-20160329040630

Ok, start Bluestacks, and hover your mouse over the icon that appears in the bottom right of the task bar (System notifications), it should show the version number... The data still may be there with 2 re-installations is you're using version 0.x or 2.1.x.

In case you have technical knowledge, I'll outline the basis behind this type of recovery:
 * Root the device
 * Pull all .dat files from the base Aniplex userdata folder (Name changes depending on original game version/installed apk). If multiple userdata folders exist, keep each set of files separate.
 * Uninstall the game/Reinstall the game, ensure folders are empty before launch.
 * Launch game to populate .dat files.
 * Replace new .dat files with recovered .dat files, launch game to see if you have your save data back. Do this for each set of recovered .dat files if multiple sets were found.