Deco-kei Trucker Anna(2014)

Anna is a farmer who rides a decorated truck. One day, her mother Kimiko, whom she had not heard from since she left to dig for buried gold five years ago, shows up. In contrast to the villagers' joy, Anna still resents her mother for abandoning her. A man calling himself Kitō shows up asking for Kimiko. The next day, Kimiko is nowhere to be found...