While living a peaceful life with her husband, Mariko has grown somewhat tired of her peculiar fetish. Her secret desires are noticed by her playboy brother-in-law, Kenta... Skilled in arousing the lascivious heart within, Kenta seduces Mariko, who finds herself surrendering to his touch. Delicate yet bold caresses easily melt away the walls of her vagina, gradually loosening her stubborn heart and body. Before she knows it, Mariko is telling herself, 'I was just led astray...'
