Her name is Akiko and she is a fun-loving single mother to a young schoolboy. He needs her. She needs men. Specifically, she needs sex and attention from men and almost any man would do so sometimes the boy Shuhei does not receive the attention he craves. Men come and go, pleasure is given and received and it is all good until one day there is a large blood stain on Shuhei's clothes. He has murdered his grandparents.