Watch Sadisflix. Fifteen-year-old Ako is fascinated by the paintings of her classmate Shun, and during her adolescence, when her ego begins to emerge, she becomes enamored with him. However, at 17, Shun has changed from the man she was attracted to at that time, and Ako struggles with a sense of inferiority and dislike toward herself, Shun, and others who are left behind in the past and becoming adults.