AKA
親指さがし
Oyayubi sagashi
Looking for the Thumb

Synopsis
According to an urban legend, there is a young girl with a missing index finger, and anyone who finds her index finger will be granted a wish. Just for fun, six elementary school students play an eerie spirit game to search for the finger, only to find one person missing at the game's completion. Eight years later, the remaining five members meet again at their student reunion, still guilt-ridden over the events of the past. They decide to play the spirit game once more in order to find their friend. This time, everyone starts disappearing, one by one...
(source: Crunchycentipedes)

Cast
Matsuyama Kenichi
Ito Ayumi
Nagai Luna
Onoue Hiroyuki