Mei confesses to her tutor, Misaki, saying, "I love you! I really love you!" At first, Mei was someone who looked up to her like an older sister. However, as her physical affection gradually increased, Misaki begins to realize that Mei's "love" is romantic in nature. Unable to reciprocate those feelings, Misaki decides to quit her job as a private tutor upon becoming engaged. Six months later, an unexpected event occurs between the two of them.