"Huh? Isn't this girl... soft? She doesn't resist when I touch her... I can do whatever I want with her!" On a hot and humid summer day, my niece Rina came to stay over. In the past few years, she has grown into a cuter, busty girl, but her insides are the same as they were before! We play naughty pranks on her during her nap, take baths together, and have lots of creampie sex with her breasts fondled, but Rina, who was initially unresponsive, gradually starts to feel something! I get to fully enjoy my niece's defenseless and unresisting busty body!