Blu-ray release of the film "KOTOKO." Stars Japanese singer Cocco. Directed by Shinya Tsukamoto of "Tetsuo." Plot: The story centers on a single mother and a singer, Kotoko who suffers from double vision. She has a baby son, and to caring for him is a nerve-wrecking task. The situation eventually leads her to a nervous breakdown. One day she meets a novelist who says he is fascinated by her song, and before long, they live together. He offers momentary relief to her, however. . .