How many movies have Bou Tarou and Rena Sakaguchi collaborated on?

They have worked on 1 movie together! Their first movie together was Massage Therapist At A Business Hotel – I Got So Excited When I Saw Her Breast… 6 (2015) and was their highest rated movie together. They have not worked together since Massage Therapist At A Business Hotel – I Got So Excited When I Saw Her Breast… 6 (2015).