NASK-309 It was actually a super direct hit with my mother in mixed bathing, just the two of us… She let her guard down and exposed her naked body without any defenses because I was a child. I made a mistake by getting rock hard. Part of the whole story.

Film Introduction

A hot spring trip with my son. The last time I saw him in a mixed bath, his body had become that of a full-grown man. My son, seeing his still-beautiful and firm mother naked for the first time in a long while, couldn't help but get an erection. Where will these two end up... Series 5!