How many movies have Baku Numata and Shōtarō Ikenami collaborated on?

They have worked on 7 movies together! Their first movie together was Onihei Crime Files Special: Okatsu from Yamabukiya (2005) while their highest rated movie together was Onihei Crime Files: Unibrow (2007). They have not worked together since Onihei Crime Files: A Bandit Wedding (2011). They are most known for their drama films together.