Yobai (Japanese: 夜這い, "night crawling") was an ancient Japanese custom usually practiced by young unmarried people. It was once common all over Japan and was practiced in some rural areas until the beginning of the Meiji era and even into the 20th century. == Description == At night, young unmarried men would silently enter houses with young unmarried women. A man would silently crawl into a woman's room and make his intentions known. If the woman consented, they would sleep together. By the morning, he would leave. The girl's family might know about it, but pretend they did not. It was common...