Yoku Wakaru Gendai Mahou EP6 - Ghostscript

Still in the past Koyomi decides joins forces with Yumiko in order to stop Guibarthez rather than returning to her own time straight away. However, when Guibarthez manages to get a hold of Kerykeion the girls may no longer be able to stop him, and even the timely arrival of Misa may not help them.