How many movies have Aya Ueto and Mutsumi Yamamoto collaborated on?

They have worked on 1 movie together! Their first movie together was Hitoribocchi - Hito to Hito wo Tsunagu Ai no Monogatari (2023) and was their highest rated movie together. They have not worked together since Hitoribocchi - Hito to Hito wo Tsunagu Ai no Monogatari (2023).