How many movies have Kenji Nagai and Kentaro Takahashi collaborated on?

They have worked on 7 movies together! Their first movie together was Kaiki Senyaichiya Monogatari: Sen no Maki (1991) while their highest rated movie together was Bloody! Scary Horror! (1992). They have not worked together since Bloody! Scary Horror! (1992). They are most known for their horror films together.