How many movies have Keisuke Urushizaki and Mamiko Hiwatari collaborated on?

They have worked on 1 movie together! Their first movie together was Mysterious! Unbelievable: Spiritual Medium: Off-Limits Collection (2002) and was their highest rated movie together. They have not worked together since Mysterious! Unbelievable: Spiritual Medium: Off-Limits Collection (2002).