The eldest daughter of Pantasia, Yukino is known for being quite cruel. For instance, she placed her mother's remains under a withered tree instead of her proper grave. Her intention was initially to buy up her grandfather's stock but ended up becoming the president of St. Pierre in an unexpected turn of events. She harbors a grudge against Pantasia and attempted to drain its 12 billion yen won by Kanmuri during his bet on Team Japan in the Monaco Cup. Additionally, she appears to have a romantic relationship with Yūuchi Kirisaki. As one of Azuma's antagonists, Yukino possesses the opposite of Solar's Snow Storm Hands, and she deeply dislikes Tsukino, often insulting her, which greatly angers Azuma.