FTHT-139 "Want to see big sister's panties?" A bittersweet memory in the shopping center's restroom. "Don't tell Mom about today, okay!" "...Okay."

At that time, I didn't know anything yet... It was an afternoon during summer vacation.
One day, I went shopping with my mom at a shopping center, but we got sidetracked.
When I happened to be looking at the panty shots of a lady sitting on a bench, my eyes fell on her.
Then, she said, ``Hey, are you interested in my panties? Shall I show them to you?'' I was taken to a deserted place, where I was allowed to enjoy my sister's private parts on the condition that I never tell my mom. I decided to...
I scrubbed my girlfriend's older sister's pants.
I pushed it into my naughty muscles and jerked it.
I pulled down her pants and saw the crack of her butt.
I pulled the pubic hair that was sticking out of my pants.
I squeezed the soft meat from above the pants.
She told me it was a secret, but after I told my mom, she never showed up again.