From her introduction onwards, Eri is characterized as having a dual nature. Talented, beautiful, wealthy, and popular, she is admired and envied by her classmates for the glamorous lifestyle that many believe her to lead. In reality, however, Eri uses this image and her outward confidence to mask her inward feelings of loneliness and insecurity. Her social status makes her unapproachable to many of her classmates and leaves her somewhat isolated from her peers. Even at home, her parents are away on business more frequently than not. The process by which Eri grows and matures, as she starts to develop deeper friendships and searches for love, forms the backbone of one of the main plotlines in the story. She also develops feelings for Harima, she usually denies it, but as the story goes on her feelings for Harima get stronger. These are typical Tsundere traits. She appears to be married to Harima in the future with a new baby in the last chapter of School Rumble Z.
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