Hitomi lives with her husband and son.She runs a soba restaurant at her home, and she had a friend of her son come to visit her today.However, her son has an abnormal propensity for her mother, and plans to use her aphrodisiac to train her friend.That night, my son, who mixed an aphrodisiac into his dinner drink, visited her bedroom when her mother began to masturbate because she couldn't stand the hotness of her body.She was surprised Hitomi, but when she was invited to the pleasure of further aphrodisiac training, she could not stand it and was told by her son and his friends ....