Asuka's father, who Asuka had quite good memories with in his childhood, especially in baking. He confessed to his wife, Kiyomi Masamune, to that he always wished to be a girl, and left the family, rumored to later has turned into a transvestite. Years later, Yoshino came back, taking care of his son and protecting him in secret. He opened a pastry shop in the same town, selling a variety of feminine-designed pastries, each one with a theme, which Asuka and his friends visit quite often. He has a younger sister, Miyuki Yoshino, who is an expert reporter and photographer.