How many movies have Ikue Otani and Seo Yeon-ho collaborated on?

They have worked on 6 movies together! Their first movie together was Pokémon the Movie: Black - Victini and Reshiram (2011) while their highest rated movie together was Pokémon the Movie: Hoopa and the Clash of Ages (2015). They have not worked together since Pokémon the Movie: Hoopa and the Clash of Ages (2015). They are most known for their animation films together.