How many movies have Kenji Shibasaki and Toshiaki Nakazawa collaborated on?

They have worked on 7 movies together! Their first movie together was Young Thugs: Innocent Blood (1997) while their highest rated movie together was Hara-Kiri: Death of a Samurai (2011). They have not worked together since Over Your Dead Body (2014). They are most known for their action films together.