Before, he told her that he would come home once a month, but now he can only come home once a year due to work. While her husband was away from home, Mitsumi's sexual desire reached its limit. At this time, his sister-in-law's family went on a business trip. Because they wanted Kazu-kun to continue studying, they asked Mitsumi to take care of her for a few days. In fact, the boy was very hard-working, he immediately started studying as soon as he got home. Because Mitsumi was quite young, he wanted to invite his younger sister, Mitsumi happily agreed. When her lust reached its limit, Mitsumi had a bold idea … Seduce this innocent boy to satisfy his sexual desires! Thinking so, Mitsumi deliberately exposed her underwear in front of Kazu, but the boy just stood there watching without doing anything. Next, she also took off her underwear, revealing her 'mysterious cleavage'. in front of my nephew. But still no results. However, she succeeded in making the “Nightingale” The young man raised his head high.