Kasumi was worried when her only daughter Kyoko started spending all her time with a man named "Taro" who she had started dating. Kasumi went to Taro's house to pick up Kyoko who was late getting home today, but she breathed a sigh of relief when she heard Taro's sincere feelings for her. However, Taro suggested to her that he wanted her to teach his mother how to treat a woman. Kasumi accepted the suggestion, thinking that it would be good for her daughter, but the taste of a young man's cock, which she hadn't tasted in a long time, was more stimulating than she had imagined...