Wakamatsu Masato lives with his step-sister, Miyuki, whom he does not have blood relationship with. Their father is always working overseas and left the two of them living by themselves in Tokyo. Miyuki is cute, nice, sensitive and very popular among guys around Masato. Masato has a girlfriend at school whose name is Kashima Miyuki, who is pretty and gentle, the ideal dream of every high school boy. That's right, there are two people called Miyuki! Source: Manga