Incest Mom, the bathtub broke this time.

Ryoko has raised her only son, Jiro, by herself. They ate the bare minimum and took baths together to save money on gas...Although they could not be called wealthy, the mother and son held each other's hands and lived a happy life. One day, without warning, the Iori family's bath breaks down. Summer is in full swing... Ryoko and Jirou are at a loss as to what to do as they wipe their sweat from their dripping sweat as they can't find the money for repairs. A guest comes to the mother and child, but...