Katsura Palace Chinatsu is the youngest daughter of the famous Katsura Palace family in Kyoto. Unfortunately, she was born weak and sickly, and her family did not have high expectations for her. In the first semester of junior high school, he studied at Qingxue, and later transferred to Hyokui. During her six months at Seiko, Chinatsu always liked to feed the koi fish at the nearby artificial lake, and there was often a boy with brown bangs there. Chinatsu found that they had many topics in common, such as the little prince. But due to a childhood illness, Chinatsu would forget a person's face if she didn't see them for too long. Because I hate eating things like carrots, I have temporary night blindness. When Chinatsu was about to leave, the brown-haired boy gave her a small pot of cactus. Just when Chinatsu wanted to ask his name, he ran away shyly. So Chinatsu started her new life in Hyotei. On Hyokui's first day, her mother entrusted her to a silver-haired boy. It is said that he is the young master of the Atobe family. The Katsura Palace family and the Atobu family have always been on good terms. The silver-haired boy was a talkative man, and on the surface he disliked Chinatsu for being weak and stupid, but in fact he always took good care of Chinatsu. Slowly, the thin figure beside the artificial lake blurred. In the second year of junior high school, Chinatsu's old illness broke out, and Atobe rushed her to Tokyo General Hospital. Hyotei's studies and tennis club training are very stressful, and Atobe only comes to visit the heroine once a week. At Tokyo General Hospital, Chinatsu met a sickly and beautiful boy with purple-blue hair. They never spoke to each other. It was basically just a chance encounter on the rooftop or in the hospital garden. On the third day of junior high school, Chinatsu was discharged from the hospital, and the story began...