How many movies have Ken Narita and Kumiko Watanabe acted in together?

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 Nintama Rantarou Movie: Ninjutsu Gakuen Zenin Shutsudou! no Dan (2011). They are most known for their animation films together.