Some Japanese internet websites criticize the logo.

The logo looks like a red panda.

The logo of Tokyo Metro
The new logo had a big impact.
Above the stairs at the station, the M-shaped design attracted people's attention.
Interestingly enough, on the signboard, there was only M-shaped logo without the company name.
It takes time for people to recognize the meaning of the logo.

There is a rumor that the logo is erotic.
Tokyo Metro..
The logo looks like a lying person with his or her legs widely open!