Sankai (meaning “birth monster”) is known as kekkai in Saitoma Prefecture and Kanagawa Prefecture and kekke in Nagano Prefecture. The legends regarding its out appearance are sparse, but it is said to look like a cattle and is hairy. After birth it’s said to bury under the house to kill its mother. In Urawa, a practice existed of surrounding the bottom of a house with byōbu during childbirth to prevent this from happening. If the kekkai successfully escapes, the mother will die. In order to prevent this someone would have to guard the hearth usually with a shamoji.