How many movies have Maki Izawa and Makoto Shinozaki collaborated on?

They have worked on 4 movies together! Their first movie together was Kai-Ki: Tales of Terror from Tokyo (2010) while their highest rated movie together was Kaidan Shin Mimibukuro Kaiki Nozomi (2010). They have not worked together since Since Then (2013). They are most known for their horror films together.