Fresh out of college, Kaede Minato has landed a job in Tokyo and moves to the city to live on her own. Until her apartment is ready, she stays with her brother and his wife. Though naturally reserved, Kaede has recently awakened to her own erotic desires—and finds herself increasingly disturbed by the sensual aura of her sister-in-law, Rui Nego to. Sensing Kaede's vulnerability, Rui seizes the opportunity when her husband leaves for a two-week business trip abroad, plotting to turn Kaede into her personal sex slave. Life in her brother's household takes a dramatic turn. The story unfolds with intense anticipation, revealing how Kaede's mind and body will be shaken to their core.