She goes to great lengths to sabotage Momo's life. Her fair features—pale skin and brown hair—stand in stark contrast to Momo's, masking her scheming and manipulative nature behind an "innocent" facade. She is the one spreading malicious rumors about Momo, something Momo is aware of but struggles to counter because people are more inclined to believe Sae over the 'airheaded ganguro girl.' Using these rumors, she turns people against Momo, driven by her own jealousy and insecurity. One rumor she spreads claims that she is dating Touji and that Momo is trying to steal him away when, in reality, it's the opposite.
She is truly mean-spirited and has no regard for Momo, nor is she a genuine friend. All she desires is popularity at school, with Momo as a despised outcast and Touji all to herself. She will stop at nothing to achieve this goal. Later, she dates a male model as part of a vindictive scheme to hurt Momo, marking her nastiest plot yet. Ultimately, she ruins both Momo's and Touji's lives.
