When she was a student, Mitsumi had many 'love affairs'. She even got called a 'whore' by others. But since getting married, she has completely changed. Building a family with a kind and gentle husband, she became a full-time housewife. Mitsumi enjoyed the most peaceful time of her life. However, everything was disrupted when her husband had to travel far away for work. He used to promise to come home once a month, but due to his job, he could only return once a year now. During the time her husband was away, Mitsumi's sexual desire reached its limit. Right at this moment, her sister-in-law's family went on a trip, and since they wanted Kazu-kun to keep studying, Mitsumi was asked to take care of the boy for a few days. The boy was diligent, as soon as he arrived home, he immediately started studying. Because Mitsumi was quite young, the boy wanted to call her 'sister', and Mitsumi happily agreed. With her lust at its peak, Mitsumi came up with a daring idea... to seduce this innocent and naive young nephew to satisfy her sexual cravings! Thinking and doing, Mitsumi intentionally exposed her underwear in front of Kazu, but the boy just looked without doing anything. Next, she even took off her underwear, revealing her 'mysterious spring gap' in front of the young nephew. But the result was still not what she expected. However, she succeeded in making the young 'nightingale' raise his head. By nightfall, she was determined to take Kazu's virginity, quietly entering the room and seducing him! Mitsumi's plan was successful, but she awakened the sexual monster inside Kazu! He was not satisfied with just once, ejaculating time after time, even refusing to wear a condom, continuously releasing all his 'seeds' inside his aunt's promiscuous body!