Mahiru is a girl from the Hyuuga family who is infatuated by Kyouhei. She consider
herself and Kyouhei as the best Seki of their respective families, thus
want to marry him and chased him to the city. She's Koushiro's cousin
and she has been a Seki since she's younger than Kyouhei and Aki, thus
more experienced in controlling her Doll, Magatsuhi
