Jiang Qino, a girl with an ordinary appearance and somewhat introverted personality, escaped the clutches of her class teacher because of the rescue of her senior student, Furuno Cheng. As she gradually became familiar with Furuno Cheng, she found that she fell in love with him. It seemed that the story had begun to turn into a love affair full of girlish feelings, but Furuno Cheng unexpectedly lived in Jiang Qino's home. Just when Jiang Qino wanted to find out what was going on, her mother told her something that she could not accept...