Helen the Baby Fox (2006)

Leaving school for the day, seven-year old Taichi finds a baby fox alongside a road in rural Hokkaido. The two bond, and Taichi decides to leave the fox with the police as a lost item. The policeman on duty takes a reluctant Taichi and the fox to the local Yajima Veterinary Clinic. It turns out that Taichi has begun to live with Ko, the vet, and his teenage daughter Misuzu after his free-spirited mother Ritsuko has gone to Micronesia to work as a photographer.