Yusuke falls in love at first sight with Ai Aizawa, with whom he exchanged greetings as soon as he entered high school. Yusuke wants to talk to her, but he can't get the ball rolling and ends up following her. Yusuke's friend Hiroki accuses him of being a stalker, but Yusuke doesn't realize it. Then Ai, who knows that Yusuke has been following her, directly asks her why she has been following him...