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The Pump It Up video for Banya's "Canon-D"?
Nope, it's not that. As I said, it was anime that was even recommended to me on Crunchy.
No, not that one either. Art style was very different, and the protagonist was a girl with long white hair.
For a moment I thought it's The Girl and the Robot but that one is not mobile and the girl's hair is black.
Edited by sohibil Humankind is like a train. No matter how powerful the locomotive is, it can only travel as fast as its slowest car allows it to.
Okay, so there was this anime from a few years ago that was basically about a girl and her robot (the robot was designed along the lines of those in Castle in the Sky) which name I cannot remember. I also recall seeing adds of a mobile game, thought I'm not sure if the mobile game was based on the anime, or the anime was based on the mg. I recall this anime being heavily promoted by crunchyroll
I did found this video game literally called A girl and her Robot, which does look very similar aesthtic wise, but it's not the same.