How many movies have Ha Dung and Tomokazu Seki collaborated on?

They have worked on 2 movies together! Their first movie together was Doraemon: Nobita and the Space Heroes (2015) while their highest rated movie together was Doraemon: Nobita's Chronicle of the Moon Exploration (2019). They have not worked together since Doraemon: Nobita's Chronicle of the Moon Exploration (2019).