HSAM-003 Forced to drink aphrodisiac, my little sister Mirina got a fever

Little sister who loves her big brother so much she wants to marry him! This time, SOD supports the loving brother and sister! They have a romantic date while sightseeing, and then he slips an aphrodisiac into her dinner at their lodging! When big brother takes care of his feverish little sister, his dick reacts to her hot body, and they end up committing incest! All the pent-up feelings explode, and big brother can't stop pistoning! Little sister is overjoyed as big brother cums inside her!