The protagonist is beautiful, smart, and good at sports. She is the perfect daughter of a respected family. However, she is suddenly stricken with a bizarre disease called "Glass Heart Syndrome". If her heart rate rises above normal, she will die. The only cure is to train her heart by experiencing heart-pounding situations through dating!

The protagonist is beautiful, smart, and good at sports. She is the perfect daughter of a respected family. However, she is suddenly stricken with a bizarre disease called "Glass Heart Syndrome". If her heart rate rises above normal, she will die. The only cure is to train her heart by experiencing heart-pounding situations through dating!