Kajika Louisa Kugami Burnsworth is the sole daughter of Harry Burnsworth, a powerful and respected industrialist capable of moving the world. When Kajika was only two years old, her life was threatened, and her mother died protecting her. Following this tragedy, Harry sent his only child to the isolated island of Giviolle, where she was raised by the native Maria. During her time there, Kajika’s companions included a white leopard named Mustafa and a boy named Li Ren Fang, who visited her two or three times a year. Now fourteen, Kajika returns to her father's side, only to be told to begin a game to find her future husband. Harry ensures Kajika willingly participates by telling her she must face the harshness of her fate alongside the man she chooses. She must decide among three candidates personally selected by Harry, but it will not be easy. Kajika must figure out who they are and where they are, with no information other than the fact that they all possess irresistible brilliance and charm. Meanwhile, the men are unaware that they are the chosen ones. Kajika must also choose wisely, as her partner must willingly accept her as his bride. Hanasakeru Seishounen revolves around endearing love, intense passion, noble friendship, undying loyalty, family relations, and political intrigue. The heaviness of Kajika’s fate is real, the threat on her life is inevitable, and the husband game is more than just a mere game. Harry needs to find a suitable partner to protect his daughter before someone discovers Kajika’s deep secret—a secret even she is unaware of.