The incredibly cute little devil sister, Hikaru Konno, makes her appearance! Her slender, graceful limbs and large, captivating eyes are irresistible. As she gazes intently at her older brother, a man can't help but feel overwhelming desire. Fully aware of her brother's feelings, Hikaru deliberately shows herself touching other men. Witnessing this firsthand, her brother is torn between intense jealousy and burning lust, his emotions thrown into chaos. How will their relationship evolve amid this clash of love and desire? Don't miss the intense, emotional journey between this mysterious sister and her brother!