“Kouta” was born as the son of a large pharmaceutical company that invested a large amount of money in the school. He’s gotten everything he’s ever wanted, but he’s the only one who still can’t get it. That person is Asuna, a Yankee girl who lives in isolation. She tried her best to get her, but was defeated, and Kota, who could not even get close to her, reached a turning point. Through the tears shown by a young Yankee girl, he learns about her younger brother who is suffering from an incurable disease and the existence of a special medicine. For her brother’s sake, Asuna quits school and sells himself to obtain medicine. Asuna ends up in the hands of a man she doesn’t know. I don’t have any choice, I can’t choose. Kota uses the power of the pharmaceutical company where he was born and his parents’ family to demand Asuna’s presence in exchange for providing medicine. He plots to get Asuna. Asuna, who is ready to sacrifice everything for her younger brother, accepts Kota’s request and signs a contract with her.