The brother who thought his sister was serious witnessed her adultery scene! Moreover, he made eye contact with his sister as she was 'hugging' and having sex with her lover! Seeing his sister's lewd appearance for the first time, his dick stood up like a steel rod! The lover noticed this chaotic situation and fled. The remaining sister and brother paid no mind to the awkward atmosphere, their crotches tingling with excitement that couldn't be contained, and with a 'jupp' sound, he inserted... Forbidden incest!
