Is there an idle reward system in the game?

The game features an Idle Combat system which allows you to collect resources even if you’re not actively playing the game. You can collect character EXP, clover stickers, coins, stamps, and more. The more stages you’ve cleared, the more resources they can collect per hour. The maximum limit is 24 hours; if the resources are not collected within that time period, no additional resources will be gained until the resources are claimed.