Mahou Shoujo no Imouto

Yuria is a magical girl who protects the city from threats, and her younger sister Rin has always looked up to her with admiration. The two share a close bond, with Rin watching her sister's heroic deeds from the sidelines and dreaming of being like her. Their daily life is filled with warmth and mutual affection, as Yuria balances her secret identity with her role as an older sister.

However, their relationship becomes strained after a certain incident shakes the foundation of their trust. Rin begins to see a side of her sister she never expected, and the distance between them grows. As Yuria continues her duties as a magical girl, Rin must confront the changing dynamics with the sister she once idolized, struggling to understand what has happened and whether their bond can ever be the same again.