She is very proud of her appearance and popularity, bordering on narcissism. Midori has a fragile ego and becomes resentful and borderline psychotic if someone rejects her, something she is not used to. After Kou tells Midori that she is not his type, her pride is wounded, and she becomes determined to "make his heart jump" with her cuteness several days later. Even much later, she tells him how she would never forgive him for rejecting her. Midori craves social approval and is open about it.