Soul insert Volume 1 First contact with the female body!

Naoto has a beautiful stepmother and step-sister due to his father's remarriage, but he feels anxious about the constant distance between him and his step-sister Yui. One day, when I looked at my phone, I found a mysterious app that could tell me everything about the other person. When I immediately used the app on my younger sister, it transferred to her body. Confused, he returns to his sister's room, but when he sees her body reflected in the full-length mirror, the lust he has been suppressing comes out. Unable to hold back his lust, he groped her firm breasts and plump nipples, enjoying the pleasure of a woman he had never experienced before.