DANDY-916 On a girls-only hot spring trip, I was sandwiched between my mother's two big-breasted friends and had lesbian sex with them

My mom and two big breasted mom friends who live nearby are going on a hot spring trip, so I decided to tag along... I'm nervous and can't get along with my mom friends, who I haven't seen in a while. They talk to me a lot and I thought they were kind people, but they start to cling to me and I come across them doing naughty things... Even though my mom is right next to me, I'm curious about sex, so they teach me all sorts of things... I can't forget the excitement even when I get home...