DANDY-994 I Was Treated Like a Toy by My Two Nieces on a Hot Spring Trip, Vol. 2

A chance event leads me to go on a hot spring trip with my two nieces. Curious about the body of an adult, which is different from their own, they keep asking questions and trying to touch me whenever they get the chance. At first I did not mind, but their behavior gradually becomes more suggestive, and I end up reacting more than I expected. Seemingly intrigued by how sensitive my body is, my nieces catch me while I am asleep and overwhelm me, leaving me completely flustered. I am drawn into their newly awakened curiosity and end up falling under their influence.