Stranded with Girlfriend’s Sister Until Morning – Sachiko

Synopsis

A man living with his girlfriend had been considering marriage. He maintained a good relationship with her younger sister, Sachiko. One day, a sudden downpour stopped the trains, leaving Sachiko stranded. She came to her sister’s apartment nearby. However, her sister was also stranded at work, leaving him alone with Sachiko, who would soon be his sister-in-law. When he lets her in, completely soaked with her underwear visible through her wet clothes, he loses control of his desires and kisses her.