They serve as a replacement for the Tokyo Metro 02 series that was in service on the Marunouchi Line from 1988 to 2024.

[4] They are fitted with permanent magnet synchronous motors and silicon carbide traction inverters, which are expected to reduce the power consumption by about 20%, compared to the Tokyo Metro 02 series currently in service on the Marunouchi Line.

They also have power outlets for passengers to charge their mobile devices.

[7] In March 2018, Tokyo Metro announced plans to introduce a new fleet of 53 six-car sets (318 cars) for the Marunouchi Line, which would replace the Tokyo Metro 02 series.

[8] The trains are scheduled to enter revenue service in February 2019,[4] with the introduction of all 53 sets by fiscal 2022.