A recluse named "Hikage" is constantly subjected to sexual abuse by her stepbrother. He buys things for her under the guise of kindness, but always demands something in return. As his arousal grows, he rubs his hardening genitals against Hikage, refusing to leave until he reaches climax. Despite initially accepting her brother's requests due to feeling overwhelmed, she soon finds herself caught up in his escalating desires... Note that the recording contents may vary depending on the distribution method.