A legend of Koteko called "Otehime densetsu" (Legend of Princess Koteko) has it that Koteko escaped safely to Kawamata-machi, Fukushima Prefecture (referred to by today's place names) and introduced sericulture to the place.
小手子には、現在の福島県川俣町に落ち延びて養蚕を伝えたという「小手姫（おてひめ）伝説」がある。