Navigate to 'Drastic' folder in your android device and then into the 'backup' folder, there you'll find .dsv save files.
Copy those save files to your PC.
Edit those save files with PkHex and replace them in the android device again with the new edited save file.
Then open up Drastic and select load new game, then select the game and press start game and from there select continue to load up your edited save