2020 12 Episodes Japanese & English
PG Parental Guidance Recommended for Persons under 15 years

A World Where Music Doesn't Exist

In a world without music, young Echo was there the day legendary “Prayer” Jimi Stonefree and his mecha disappeared while fighting the mysterious Earless. Ten years later, he meets an amnesiac young girl named μ(Mu)who has an input jack on her back. Could she be a “Prayer” like Jimi?