Hearts are in-game currency, similar to Gold and Gems, and can be found below the character's name at the top left corner of the game screen.

To collect Hearts, you can either purchase them with Gems or obtain them by visiting friends' homes and interacting with completed crops or eating food.

You can use Hearts to advertise your requests and items on your market stand. Additionally, you can instantly refresh the items for sale in Robin Shop using Hearts.

Keep in mind that new features using Hearts may be added, so make sure to make lots of friends to collect Hearts!