March 25th, 2095. To celebrate her 15th birthday, Miyuki Shiba goes shopping with her older brother Tatsuya in Yokohama. Miyuki enjoys her time with Tatsuya as if they are on a date, and she is ecstatic when he gives her a surprise gift. However, they are interrupted by a call from the main branch of their family, the Yotsubas, who are members of the Ten Master Clans. They ask Tatsuya to attend to an urgent matter. While Miyuki waits for Tatsuya to return, the fire alarm in the building goes off. Miyuki senses that this is a criminal act committed by someone using magic and heads toward the fire.
But if this kind of thing continues,
I don't care if she is my sister's child.
،لكن إذا استمر هذا النوع من الأشياء
.لن أهتم إذا كانت ابنة أختي
Aber sollte sich so etwas wiederholen,
Pero… si esto continúa,
pero si esto se repite, me dará igual
que sea la hija de mi hermana.
Mais si cela devait se répéter,
Contudo, se esse tipo
de coisa continuar,