Open the launcher or game client
Find the uninstall option in the launcher settings or game menu
Confirm the uninstall prompt
If installed on PC, open Windows Settings
Go to Apps
Find Duet Night Abyss in the installed apps list
Select Uninstall
Confirm the removal
Delete any remaining game folders if needed
Remove leftover shortcuts from the desktop or Start menu
If installed on mobile, press and hold the app icon
Select Uninstall or Remove App
Confirm the deletion
Delete any remaining app data if needed