WAAA-014 It's been 10 years since I started sexting my older brother, and I continue to do so even now that my older brother has become a child. - Mahiro Ichiki

This is the story of a healthy younger sister who continues to support her older brother, who has become sensitive and withdrawn, and continues to have sex for 10 years. - Even though he becomes a childish uncle and is ridiculed by those around him, he is a kind and important older brother to his younger sister. - Boyfriend, work... When the younger sister is about to give up, the older brother comforts her and handles things with his own hands, but before they know it, their relationship crosses the line. - Please take a look at the brother and sister supporting each other through sex for 10 years.