Eimi Fukada's masterpiece does not disappoint you with this good sex movie. Cute girl Eimi is the wife of Tiki's brother (playful name) and one time he accidentally saw his sister-in-law lying down watching a movie and her exposed underwear extremely aroused him. After that time, he became passionate about sex and fell in love with the slit between his sister-in-law's crotch, and then one day when the whole family went to bed, his sister-in-law found out and let Tiki drink her after that time of their innocent incest.