Saki struggles with unfamiliar housework but does her best as a mother. Such a stepmother and her son Daisuke are a couple who don't get along at all. Starting with being sensitive to heat and cold, they are complete opposites. Daisuke is confused, but there is one good thing about it. That is, he gets to see Saki in light clothing all year round. Saki's appearance looked attractive to Daisuke, who was of marriageable age. One day, Daisuke finds adult toys in Saki's bedroom. Just then, Saki comes in after taking a bath...