Kagamihara Kagari

She is an ideal girl who everyone recognizes for her good looks, good behavior, and excellent grades. Moreover, until recently, she was active as an idol.

However, this is just Kagari's outward appearance, and in reality, she is arrogant and selfish. But the only time she can reveal her true self is in front of her older brother, Sora, who goes to the same school as her.

One day, a misunderstanding leads to her brother's humiliation.