When Marnie Was There

Omoide no Mânî is a movie starring Sara Takatsuki, Kasumi Arimura, and Nanako Matsushima. Due to 12 y.o. Anna's asthma, she's sent to stay with relatives of her guardian in the Japanese countryside. She likes to be alone, sketching....
Upon being sent to live with relatives in the countryside due to an illness, an emotionally distant adolescent girl becomes obsessed with an abandoned mansion and infatuated with a girl who lives there - a girl who may or may not be real.