From that evening when the sky was filled with red clouds, there was a bright and flamboyant girl in his world. She rushed into his hard and cold heart like a ball of flame with blazing temperature. She loved him fiercely and treated him tenderly, and they had been in love with each other for three years, but when she was about to fall completely, he left without any warning, leaving her to lick her wounds alone. Who silently accompanied and carefully guarded her during those years? One is a poisonous and arrogant bamboo horse, and the other is a cold and taciturn first love boyfriend. This is a story about love and protection. How will she choose her love?