How many movies have Hitomi Oba and Ichiro Tsuda collaborated on?

They have worked on 4 movies together! Their first movie together was Geinô Ura Jôji: Juku Niku no Kanshoku (2002) while their highest rated movie together was My Rosy Life, His Rosy Passion (2014). They have not worked together since My Rosy Life, His Rosy Passion (2014).