Choki (2016)

Naoto is a middle-aged man who lost his wife to cancer five years ago. He's a hairstylist; his wife was a calligrapher who had a studio above his shop, and also taught calligraphy. She was unable to have children, and always felt a particular warmth toward Saki, a young student of hers. Saki has been in a state school for the blind for many years, and a new teacher's voice reminds her of that of Naoto's wife. She reaches out to Saoto, and they form a special bond.