How many movies have Anna Tomo and Hollow Dragon collaborated on?

They have worked on 4 movies together! Their first movie together was Manyû sanshimai: Ire kui rankô (2007) while their highest rated movie together was Baibu-ya no onna shujin: Uneri-nuku (2007). They have not worked together since Sexual Harassment Baptism: Eating Disorder (2008).