How many movies have Mitsunori Hattori and Tomoyuki Imai collaborated on?

They have worked on 5 movies together! Their first movie together was Kaiki Senyaichiya Monogatari: !! no Maki (1991) while their highest rated movie together was Angel of Darkness 4 (1996). They have not worked together since Angel of Darkness 4 (1996). They are most known for their horror films together.