Unable to suppress the increasing libido as she gets older, Rikako spends her days immersing herself in masturbation at night. It was his son's friend Nobuaki who sniffed out Rikako's frustration. When I came to stay at home, I was sneaking a peek at Rikako's daily routine. That night, Nobuaki with a smile speaks in Rikako's ear. "I took this picture when my aunt was masturbating. Do you want me to erase it? Then what should I do ... you know?"
