Lucy is an easy angel to differentiate between other angels. She is a fun and adrenaline lover. But she doesn't like war because she knows that many lives are lost.She belongs to the main family, and when she ascends the throne she will end the war between angels and demons. One night, in the middle of that war, she was badly injured, but a strange demon found her and took her to a distant cave so they couldn't hurt her anymore. He was a medical demon, and thanks to him, she was able to heal after several weeks. In the process she got to know him a lot, he was not like other demons. They became good friends and started seeing each other secretly.She knew she shouldn't, but she couldn't help falling in love with him.