Tsugumi, the younger sister, is treated like a sex slave by her lustful, devilish brother. He finds his sister all over the house, shows her his erect cock, and deep-throats her, licking and kneading her soft body repeatedly, while grinning at the look on his sister's face as she reluctantly accepts it. In the end, he rubs his rock hard cock against his sister's shaved pussy and inserts it raw. Although she resists with all her might, her vagina gradually heats up and she unconsciously clings to him and starts to move her hips. After a long and relentless thrust, he inseminated her vagina with his milky sperm.