Sumire, a chaste housewife in her second year of marriage. Living with a kind and hardworking husband. The only complaint was that the bland type of husband was not very active in the marital life at night. Repair work began that week, and a taciturn, reticent, and tough-faced middle-aged craftsman appeared to be working at home. A craftsman man who only responds in a crusty manner even if he calls out. The smell of male sweat that he wafts in makes the married woman sluttily wet her crotch. And one day ...!