Sumire, a married woman who married a serious and kind husband who had a relationship since college and felt happy in the casual daily life of the couple. However, her husband's boss's man changes her life. While her husband was absent, she took advantage of her boss's position and forcibly screwed in a cock that swelled into violets and had her blood vessels floating. Sumire, who continued to be given pleasure that her husband had never felt, gradually weakened her resistance and she began to seek pleasure and meat sticks herself.