How many movies have Michino Yokoyama and Tetsuo Okutsu collaborated on?

They have worked on 1 movie together! Their first movie together was In Search of a Lost Writer: Wandering in the World of the Seventh Sense (1999) and was their highest rated movie together. They have not worked together since In Search of a Lost Writer: Wandering in the World of the Seventh Sense (1999).