Spin-off film in Kōji Shiraishi's "Senritsu Kaiki File Kowasugi" series. Made in 2014 and broadcast on NicoNico in 2015.
七海エリー
as Sadako (archive footage)
遠藤留奈
as Kayako (archive footage)
芝本麟太郎
as Toshio (archive footage)
久保山智夏
as Miho Ichikawa
松嶋初音
as Hatsune Matsushima
白石晃士
as Masatsugu Tashiro
大迫茂生
as Jin Kudo
