Suddenly appearing super cute stepsister. Excited by each other's bodies and becoming aware of each other as the opposite sex, our parents went on a week-long trip! In our life alone, the shackles were off and my stepsister and I started acting like lovers, but since we're siblings, we made a promise not to have sex, only dry humping until our parents come back, and we did it almost every day! As we lived like that, I and my stepsister couldn't help but want to penetrate! On the last night, we couldn't hold back the dry humping anymore and ended up with a slippery, squishy, ultimately raw insertion & raw internal ejaculation with continuous explosive orgasms!
