- Game engine security update
- Bug fixes

- The screen ratio has been adjusted.
- The in-app advertising module has been modified.
- The in-app purchase module has been modified.
- Unnecessary UI elements have been removed.

This update from Apple will improve the functionality of this app. No new features are included.

Made changes to privacy policy (GDPR : EU)

- Added 3 new unique Hero characters.
- Changed so that all special characters can be acquired through the Gacha machine.
- Added 30 Keys upon running the game for the first time
- Increased the number of Keys rewarded for purchase while the price remains unchanged
- Fixed other bugs

- Reduced price for all in-app items
- Optimized to reduce device heating issue and improve frame rate
- Fixed bugs