The Tokyo High Court ruled Miyazaki sane, stating that "the murders were premeditated and stemmed from Miyazaki's sexual fantasies" and he was executed by hanging for his crimes on June 17, 2008.
Pengadilan Tinggi Tokyo menyatakan dia waras, dan bahwa "pembunuhan itu direncanakan dan berasal dari fantasi seksual Miyazaki" dan dia dihukum gantung atas kejahatannya pada tanggal 17, 2008.