He was hugely popular back in his student days, but after entering the workforce, he watched his close friends marry and drift away while he became an unremarkable bachelor. One day, a gorgeous woman he barely recognizes stops him on the street. She is Umika, his former classmate and childhood friend who confessed her feelings to him ten years ago. The plain girl he remembers is now a beautiful, busty, irresistibly sexy married woman. That night, Umika walks out after a fight with her husband and comes to his home because she has nowhere else to go, setting the stage for relentless raw sex.