On 21 January 2020, Yokohama City and Kawasaki City announced the route and four new stations for the planned  extension of the Blue Line from Azamino Station to Shin-Yurigaoka Station on the Odakyū Odawara Line.
On 21 January 2020, Yokohama City and Kawasaki City declared the path and four new stops for the planned expansion of the Blue Line from Azamino Station to Shin-Yurigaoka Station on the Odakyū Odawara Railway.