How many movies have Tomokazu Seki and Yuko Yamamoto collaborated on?

They have worked on 5 movies together! Their first movie together was Sengoku Basara: The Last Party (2011) while their highest rated movie together was Sword Art Online the Movie – Progressive – Aria of a Starless Night (2021). They have not worked together since Sword Art Online the Movie – Progressive – Scherzo of Deep Night (2022). They are most known for their animation films together.