Soul insert Volume 1 First contact with the female body!

Naoto's father remarriage has given birth to a beautiful stepmother and step-sister, but he is worried that he is unable to measure the distance between him and his step-sister Yui. One day, when I suddenly looked at the belt in my hand, I found a mysterious app that lets me know anything about the other person. I immediately used the app for my younger sister and ended up taking over my younger sister's body. Confusingly, she returns to her younger sister's room, but the lust she has been holding back on her everyday life, erupting from the sister's body, which she is seen in the full mirror. Unable to contain her lust, she began to look at her firm breasts and plump, plump nipples, enjoying the pleasure of an unsatisfied woman.