Chisato lives with her daughter Nozomi after divorcing her husband several years ago. Recently, Chisato has also started to feel tightness in her waist, probably because of her age. Persuaded by Nozomi that money can't buy good health, Chisato reluctantly visits the women-only osteopathic clinic "Iori Seitaiin" in her neighborhood. Chisato feels relieved at the good customer service. However, after a while after the treatment started, Chisato felt uncomfortable. Unspeakable discomfort...