Himenomi Kurumi

The alternate reality version of Akira's sister Kurumi. She doesn't understand why she looks different from herself, nor does Kurara know. A self-styled genius magical girl from the magical world who apparently ran away from home along with her brother Akira, although he was too afraid to follow her into the dimensional gate. She goes by her mother's last name, "Himenomi", instead of her father's last name, "Nanamori".

To avoid confusion, she decides to have people call her Miruku, which is Kurumi in reverse.