Yumi who lives happily with her husband and daughter couple. However, when she became sexless with her husband and comforted herself, her son-in-law Yuma turned her into a side dish. Yumi felt pity for her long absence because of his too big cock. She told him, "For the two of us," and seduced him everywhere. All the time, Yuma's big cock, who was entrusted to her mother-in-law's stupidity that approached her indecentness, finally couldn't stand it.
