Mitsuko and other characters will have maximum affinity levels.
Use an app like ZArchiver or your phone’s default "Files" app. Mother-s Lesson Mitsuko APK Save Data Download
Copy your existing files to a separate folder just in case something goes wrong. Mitsuko and other characters will have maximum affinity
Save data from version 1.0 may not work on version 1.5. Ensure the save file matches your current APK version to avoid crashes. Mother-s Lesson Mitsuko APK Save Data Download
Navigate to Android > data > [com.game.package.name] > files . Note that the folder name usually starts with the developer's name or the game title.