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.
It was announced on 21 January 2020 that Yokohama City and Kawasaki City had determined the route and added four new stations to the forthcoming extension of the Blue Line, which will run from Azamino Station to Shin-Yurigaoka Station on the Odakyū Odawara Railway.