Diana and marina study in the same group. They go to the same classes all day. When Diana had already humiliated marina, after that marina already realized that she had become a slave for her classmate. During all lessons, Diana reminded marina what was waiting for her when she arrived home. marina understood that she would have to worship Diana's sweaty feet. Today Diana specially put on her old sneakers and old socks so that her feet would sweat even more than usual. As soon as they returned, marina immediately knelt in front of her new Mistress and took off her sneakers. Diana smiled and taped them with film to the pathetic marina’s face so that she would breathe sweat from her feet. After which Diana ordered her slave to sniff her sweaty socks. marina loudly sniffed her ex-friend's socks and gave her a foot massage. marina also had to worship Diana's sweaty, salty soles and suck her toes. The slave realized that now she would have to feel the salty taste of Diana’s feet every day.