Koyasu

Koyasu Station ( 子安駅 Koyasu-eki ? ) is a railway station operated by the Keikyū Keikyū Main Line located in Kanagawa-ku , Yokohama , Kanagawa Prefecture , Japan . It is located 19.3 rail kilometers from the northern terminus of the Keikyū Main Line at Shinagawa Station , in Tokyo .