The song was written by Ai and Rachel West with additional songwriting credits from producers Avedon and Scott Storch and was included on It's All Me, Vol.

On December 11, 2020, a remix featuring Japanese rapper Awich was released and later included on It's All Me, Vol.

A J-pop and pop rap song, "Not So Different" lyrically is about equality and world peace.

She originally performed the song in June 2020 amidst the George Floyd protests in an interview with Salesforce.

[2][3] In October 2020, Ai announced she would be participating in the One Young World summit to take place in Tokyo in May 2021.