How many movies have Katsuyuki Sumisawa and Toshiya Shinohara collaborated on?

They have worked on 4 movies together! Their first movie together was Inuyasha the Movie: Affections Touching Across Time (2001) while their highest rated movie together was Inuyasha the Movie 3: Swords of an Honorable Ruler (2003). They have not worked together since Inuyasha the Movie 4: Fire on the Mystic Island (2004). They are most known for their animation films together.